Educational

Courses, Documentaries, Learning Resources

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Documentaries

• Official YT Documentary Channels - YouTube Documentary Channels
• IHaveNoTV
• DocumentaryArea / Remove Watermark, 2 (or use PIP)
• Documentary+
• 1337x Documentaries - Torrent
• YT Video Essay Hall of Fame - YouTube Video Essay Archive / Frontend
• Top Documentary Films
• Thought Maybe
• Media Burn Archive
• ARTE
• Documentary Storm
• Rocumentaries
• PBS
• Folkstreams
• Films For Action
• r/Documentaries
• Videoneat
• MVGroup
• NASA+ - Official NASA Streaming Service

Courses

Streaming

• Limnology - Educational YouTube Channels
• ️ Udemy Tools / Coupons
• edX - Courses / Downloader
• MitOpenCourseWare - Courses
• Khan Academy - Courses
• Gresham College - Lectures / YouTube
• Class Central - Search for Courses
• OpenLearn - Courses
• Saylor Academy - Courses
• EbookFoundation Courses - Courses
• OpenCulture - Courses
• DigitalGarage - Google Courses
• OpenHPI - Courses
• OLI - Courses
• Video Lectures - Lectures
• Yale Courses - Lectures / YouTube
• Paul G. Allen School - Lectures
• Crash Course - Topic Crash Courses
• Course CSE - Multi-Site Course Search

Downloading

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• Free-Courses-For-Everyone - Course Site Index
• Course Busters - Course Busters Access / Telegram Required
• Docspedia - Torrenting Sites / Use VPN
• AfraTafreeh - Courses
• LinkedIn_Learning - LinkedIn Courses
• CertCommunity - IT Cert Courses / Requires Phone # (Temp Works) / Use Leeches

Learning Sites

• Learn Anything - Learning Resource Search / Free Method / /
• OpenCulture - Learning Resources
• ⁠The Borr Project / or OSSU / - Learning Resources
• The Free Learning List - Learning Resources
• Awesome Educational Games - Educational Games Index
• ️ Educational Books
• ️ Quotes / Poetry
• PhET, ⁠Project Lumen, Cognito or Academo - Interactive Lessons
• r/educationalgifs - Learn with GIFs
• r/explainlikeimfive - Have Anything Explained Very Simply
• The Punctuation Guide - Punctuation Guide
• ⁠Basic Knowledge 101 - Knowledgebase / Topic Learning
• media.ccc.de - Educational Presentations
• Stack Exchange - Q&A Communities
• Explorabl.es, MinuteLabs or Wikiversity - Quizzes / Guides / Games
• AFAIK - Learning Map /
• AnimaGraffs - Animated Infographs
• Memory Toys, ⁠Memory League, Dual N-Back or BrainScale - Memory Tests / Training
• ⁠Art of Memory - Memory Improvement Book, Games, and Forums
• Information Is Beautiful, The Pudding, ⁠sheets.works or HalcyonMaps - Data / Information / Infographics / Visualizations
• r/coolguides or coolguid.es - Guides & Tutorials
• ⁠Astral Codex Ten (ACX) or Read Scott Alexander - Science, Psychology, and Philosophy Blog
• Common Misconceptions - Common Misconception Index
• masterWiki - MasterClass Classes Republished as wikiHow Articles
• LitCharts - Literature Guides
• Appropedia - Sustainability Wiki
• British & Exotic Mineralogy - Mineralogy Database
• ShipSpotting - Ship Index / Images
• P2PU - Join Learning Groups Using Free Courses

Art Galleries / Collections

• The Met - Metropolitan Museum of Art Collection / Public-Domain Images
• Google Arts & Culture - Museum Collections / Art Exhibitions
• Rijksmuseum - Dutch Art / Museum Collection / High-Resolution Downloads
• WikiArt - Visual Art Encyclopedia / Artist Collections
• Artic - Art Institute of Chicago Collection / Open-Access Images
• NGA - National Gallery of Art / Public-Domain Images / Open Data
• V&A - Victoria and Albert Museum Collections / Art / Design
• Louvre - Art / Antiquities Collections / Historical Research
• MoMA - Museum of Modern Art Collection
• Deutsche Digitale - German Digital Cultural Heritage Collections
• VADS - UK Visual Arts / Design Archives / Digital Collections
• Ashmolean - Art / Archaeology Collections / Historical Research
• WGA - Web Gallery of Art / European Art History
• Public Work - Public-Domain Image Search
• The Last Museum - Historical Artwork Search
• Artvee - Public Domain Art / Vintage Illustrations
• The Watercolour World - Historical Watercolour Paintings / Archive
• NPG - National Portrait Gallery Collection
• RCT - Royal Collection Trust / British Royal Art Collections
• Semantic Art Search - Semantic Artwork Search /
• Centre Pompidou - Modern / Contemporary Art Collections
• Guggenheim - Modern / Contemporary Art Collections
• Frick - The Frick Collection / Fine Art
• Gardner Museum - Isabella Stewart Gardner Museum Collection
• Museo - Art Collections / Public-Domain Image Search
• Haltadefinizione - High-Resolution Art Images / Italian Art
• Artchive - Art History / Artist Collections
• Arthur - Art Discovery / Collections
• faenum - Public-Domain Artwork Search
• Gallerix - Fine Art / Painting Collections
• S.D. Cason - Historical / Public-Domain Image Collections
• poly.booru - Historical Artifact Images / /
• strauh.al - Digital Art Collection
• DarkClassics - Historical / Classical Art Collections
• European Art - European Artwork Collection
• The Wolfman Museum of Art - Digital Art Museum

Virtual Tours

• Virtual Museum Resources - Online Museums
• CityHop, Travel Remotely, Portal Generator, Walk with Feel, Outside Simulator, Japan Walkaround, CityWalks, Citywalki or Virtual Vacations - Travel Simulators
• Gez.la - Virtual Tours Map
• Wiki Spaces - Virtual Tours
• Musei Vaticani - Virtual Museum Tours
• Natural History Museum - Natural History Museum Virtual Tour
• Digital Giza - Great Pyramid Virtual Tours
• Persepolis Reimagined - Explore Persepolis Recreation
• BelowTheSurface - Archeological Object DB of Amsterdam
• WW2 in 100 Objects - WW2 Museum Virtual Tour
• Harald Joergens Panoramas - Aircraft Virtual Tours
• Virtual Vist Tours - Ireland Virtual Tours
• Virtual Yosemite - Virtual Yosemite Tour
• Matterport - Explore Real Places Digitally
• Basilica Viewer - St. Peter’s Basilica Tour
• 360Cities, ⁠Tas360 or Airpano - 360 Images / Videos
• Smithsonian 3D - Smithsonian 3D Digitization Museum
• National Palace Museum - National Palace Museum Virtual Tours
• The Bayeux Tapestry - Bayeux Tapestry 3D Digitization

Science / Math

• ️ Science News
• TIB AV-Portal - Science Videos
• LabXchange, ⁠UCAR Center Simulations or JavaLab - Interactive Science / Math Simulations
• ⁠MagnifiedSand - Microscopic Sand Magnification Database
• LabPlot, PubQ Studio or ISciDAVis - Scientific Data Plotters
• ImageJ / Web or Fiji - Scientific Image Analyzers
• BOINC - Donate Idle CPU + GPU Resources to Scientific Research / Manager / Number Theory / Humanitarian /

Physics

• Physics Aviary or Falstad - Physics Tools
• The Feynman Lectures - Physics Lectures
• Bartosz Ciechanowski, Isaac Physics, PhysicsClassroom, HyperPhysics, MotionMountain or Splung - Physics Lessons / Learning
• Mujoco, Physics Animations, oPhysics or MyPhysicsLab - Physics Simulations / Animations
• LibreTexts Physics - Physics Learning / Guides
• nLab Physics - Physics Encyclopedia
• Algodoo - Interactive Physics Tool
• QPaths - Learn Basic Quantum Terms
• ⁠Quantum Flytrap - Interactive Quantum Mechanics Virtual Lab
• Quantum - Quantum Physics Learning App
• Physics Forums - Physics / Science Forum
• Unihedron - Electromagnetic Radiation Spectrum Chart
• Interactive 4D Handbook - Interactive Fourth Dimension
• Ray Optics Simulation - Light Reflection / Refraction Simulator
• Compare Pendulum or DoublePendulum - Pendulum Simulators
• OpenFoam, PC Progress, Fluid Simulation WebGL, WebGL Fluid Experiment, OpenFOAM / or Sim Flow - Fluid Dynamics Simulators
• SimScale - Fluid Dynamics & Heat Transfer
• ⁠Mago Fluid - Debris-Flow + Tsunami Simulation
• Bouncy Balls or Balls Simulation - Ball Physics Simulator
• WebGL Water - Water Simulation
• LAMMPS - Molecular Dynamics (MD) Code
• Avogadro, 2 or MolView - Molecular Viewers / Editors
• ⁠Nuclear Reactor Simulator - ⁠Nuclear Reactor Simulator

Math

• Awesome Math or Math Resources - Math Resources
• Math and Science Lectures - Index of Math + Science Video Courses
• ️ Calculators / Problem Solvers
• ️ LaTeX Tools
• Number Academy - Encyclopedia of Numbers
• Wumbo - Math Reference Site
• ⁠The Borr Project / or OSSU Math / PT-BR / - Math Roadmaps
• AoPS Alcumus / YouTube or MathDash - Adaptive Problem Solving
• BetterExplained - Math Guides / Courses
• Paul's Online Math Notes, ⁠Immortal's Maths Problems, ⁠Evan Chen or LibreTexts Math - Math Practice / Guides
• Manim, 2 / - Generate Explanatory Math Videos / Videos / Difference Between Versions
• WolframAlpha - Searchable Knowledge Base / Mobile (search)
• OEIS - Encyclopedia of Integer Sequences
• Wolfram MathWorld or nLab Math - Mathematics Encyclopedias
• ⁠Algebrica - Mathematical Concept Database
• Red Blob Games, ⁠Mathua / or Mathspad - Interactive Math Learning
• Matthen - Math Animations
• ⁠Math Discord - Math Help / Community Discord
• ⁠Mathematical Olympiads - Mathematical Olympiads Discord Community /
• Mathcha or Corca - Online Math Editors
• SequenceDB - Sequence Machine
• ⁠Erich's Packing Center - Geometric Packing Problem Archive
• ⁠ProofWiki - Mathematical Proofs Encyclopedia
• Giac/Xcas - Algebra System
• Algebra Rules - Learn Algebra Rules
• Linear Algebra Done Right - Linear Algebra Book / Guide
• Calculus Made Easy, ⁠Ximera or ⁠Stitz Zeager - Learn / Practice Calculus
• CLP - Calculus Textbooks
• Mathematics Roadmap or ⁠Learn Mathematics - Mathematics Book Recommendations
• MathJax - JavaScript Math Display
• MathOnline, ⁠CEMC or Mathigon - Math / Courses
• Professor Leonard, ⁠Art of Problem Solving, Flipped Mastery, 3Blue1Brown or MisterWootube - YouTube Math Lessons
• Mathispower4u, ⁠Andy Math, ⁠MadAsMaths, Math Planet or CoolMath - Math Lessons / Practice
• Coolmath Games - Math Games
• Cut The Knot or ⁠MathNet - Math Equations / Problems
• HSC Maths By Topic - HSC Math Practice
• Vim/LaTeX Mathematics Note-Taking Guide
• ParkMath or FreeMathHelp - Math Guides
• ISODN Math - ISODN Math Discord Community
• Fourier Transform - Interactive Fourier Transform Guide
• Terence Tao Research - Mathematical Research
• Open Logic Project - Math Logic Teaching Materials
• Math is Fun - Math Tutorials / Puzzles / Games
• Brainstellar Puzzles - Puzzles from Quant Interviews
• Project Euler - Math / Programming Problems
• ⁠VibeMathed - Index of Mathematical Problems Solved by AI
• LibreTexts Statistic - Statistic Practice / Guides
• IMS - Introduction to Modern Statistics
• Seeing Theory - Statistics & Probability Tutorials

Engineering

• The Engineering Toolbox or EngineersEdge - Engineering Resources
• r/EngineeringStudents Resources - Engineering Student Resources
• Awesome Electronics - Electronic Engineering Resources
• Engineering Blogs - Engineering Blogs
• ️ Comp Sci Resources
• ️ Vehicle Resources
• ️ 3D Modeling / CAD Apps
• r/AskEngineers / Wiki - Engineering Subreddit
• NPTEL or Sabin - Engineering Courses
• KiCad / Libraries or Horizon EDA - Schematics Editor / PCB Creator / SPICE Integration
• ⁠IEEE Spectrum - Engineering Magazine / News
• Formulia - Engineering Formulas / Tools
• BOMwiki - Product Blueprint Components Database / /
• ⁠Hackster.io - Hardware Learning / Project Sharing
• Sanfoundry - Engineering Questions & Answers
• SendCutSend Education - CAD Engineering Study Guide / Videos /
• SOLIDWORKS Practice Problems - CAD Engineering Practice Exercises /
• Tinkercad - Educational CAD Modeling
• LibreTexts Engineering - Engineering Learning / Guides
• ⁠Lunchbox Sessions - Interactive Mechanical / Electric Engineering Tutorials
• CESDB or LavTeam - Engineering Software
• ⁠MatWeb - Engineering Material Property Database
• ⁠Animated Engines - Engine Animations / Explanations
• 507 Movements - Mechanical Movement Animations
• ⁠How To Mechatronics - Tutorials / Guides for Mechatronics & Electronics
• Robot Shop - Robotics Forum
• VisRo Robotics / or ⁠VittaScience - Robotics Learning
• ⁠Humanity's Last Machine or Humanoid Atlas / - Humanoid Robotics Hardware & Supply Chain Analysis
• Cyberbotics - Robot Simulator
• Wokwi - Arduino / ESP32 Board Simulators
• HDLBits - Learn Circuit Design
• ⁠Last Minute Engineers - Electronics Engineering Learning
• Falstad, Altium, SKiDL / , atopile, EasyEDA or LibrePCB - Electronic Circuit Design / Simulation Tools
• ⁠The Pinouts Book - Pinout Function Reference Guide
• Circuit Steps - Circuit Analysis Tool
• BatteryUniversity - Learn About Batteries
• ⁠Datasheet4U - Electronic Components Datasheet
• Electronics Tutorials - Electronic Guides
• ⁠Hacker Fab - Semiconductor Documentation / Research
• RetroSix - Retro Console Repair Guides + Info /
• /m/engineering - Engineering Multireddit
• ⁠McMaster or 3D Find It - Free 3D Printable Hardware Parts + Tools
• Build List or USA Parts Made Fast / - On-Demand Online Manufacturers

Chemistry

• Wolfram Alpha Chemistry - Chemistry Calculators / Tools
• ️ Periodic Tables
• LibreTexts Chemistry - Chemistry Texts
• Internet Chemistry - Chemistry Search Index
• Chemistry Basics - Basics of General, Organic, and Biological Chemistry
• ChemicalAid, ⁠WebQC or Chemequations - Chemistry Calculators / Element Tables
• QuickChem - Chemistry Calculator
• PubChem, MOTM or NIST - Chemistry Wikis
• ⁠Chempirical - Chemistry Tools /
• Video-Tutor / YT, Tyler DeWitt, Allery Chemistry, Khan Academy AP Chemistry, Organic Chemistry etext or PeriodicVideos - Chemistry Lessons
• ChemistrySteps, ⁠ChemQuiz, Science Geek or DocBrown - Chemistry Practice / Guides
• Cliffnotes Chemistry / Organic Chemistry I / Organic Chemistry II or chemguide - Study Guides
• ReactionFlash / iOS - Chemical Reaction Flashcards
• ⁠Compound Interest - Chemistry Infographics
• Sciencenotes - Periodic Tables / Chemistry Projects and Questions
• Organic Chemistry or Synarchive - Organic Reactions
• CommonOrganicChemistry - Common Reactions / Common Reagents
• name-reaction - List of Name Reactions
• ChemTube3D - Interactive 3D Chemistry Animations
• ChemSpider - Chemical Structures
• ⁠ChemOCR - Extract Chemical Structures + Data from Images
• Merck Index - Online Merck Index
• Organic Chemistry Data - Organic Chemistry Data
• IGOC - Illustrated Glossary of Organic Chemistry
• Not Voodoo ReduX - Organic Chemistry Laboratory Techniques Guide
• Colorado Chemistry Simulations - Chemistry Animations
• Chemical Forums - Chemistry Forums
• ISODN Chemistry - ISODN Chemistry Discord Community
• Arkivoc - Journals
• WebQC Balance Calculator - Chemical Equation Balance Calculator
• Chemexper Chemical Directory - Chemical Directory
• OrgSyn - Chemistry Prep Guides

Periodic Tables

• Ptable - Interactive Table
• ⁠Zperiod - Interactive Table /
• Images of Chemical Elements - Element Images
• periodic-table.org or Material Properties - Material / Element Learning Resources
• Atom Animation / or 3D Periodic Table - 3D Visualizations of Atoms
• Atomic - Periodic Table Mobile App
• periodic-table.io - Interactive Table
• WebElements - Interactive Table
• ⁠Photographic Periodic Table - Image-Based Periodic Table w/ Physical Examples

Biology

• ⁠Awesome Bioinformatics - Bioinformatics Learning Resources + Tools
• Wikispecies or The Catalogue of Life - Species Databases
• OneZoom or ⁠Ptree - Tree of Life Reference / Explorers
• Lost and Found Nature - Rediscovered Animal / Plant Database
• A-Z Animal - Animal Encyclopedia
• ⁠Wayne's Word - Biology and Botany Information / Learning
• Biology Online - Biology Articles
• ⁠Nature This Week - View Nature / Biology News from any Location
• Science Geek - Biology Study Guides
• LibreTexts Biology - Biology Learning / Guides
• ⁠HHMI BioInteractive - Interactive Biology Learning
• Bodily Oddities - Human Anatomy Oddities Catalog
• Project ⁠Alveus Sanctuary - 24/7 Educational Wildlife Live Streams / Conservation Project
• ⁠BioNinja - IB Biology Reference / Study Guide
• ⁠The Biology Project - Biology Problem Sets & Tutorials
• Biodiversity Heritage Library - Biodiversity Research
• Alien - Artificial Life Simulator / Video /
• ⁠Map of Life - Interactive Map of Species Distributions
• ⁠Movebank - Animal Tracking Map / Database
• Metazooa - Species Connection Game
• ⁠Phenome10K - Biological / Palaeontological 3D Scans
• RecentlyExtinctSpecies - Recently Extinct Species Database
• UniProt - Protein Database
• iNaturalist - Organism Identification
• Ocearch - Track Marine Life
• The Deep Sea - Interactive Deep Sea Life Guide
• Pattern Radio - Listen to Whale Songs
• eBird, Audubon or AllAboutBirds - Bird Species Databases / IDs
• ⁠BirdLife DataZone - Bird Conservation Information
• EuroBirdPortal - European Bird Distribution Map
• ⁠Koreaves - Korean Regional Bird Evidence Explorer
• BirdSounds - Thousands of Bird Sounds Visualized
• Merlin, BirdNET or whoBIRD - Bird Picture / Sound Identification
• Featherbase - Bird Feather Database
• BugGuide - Insect Identification Community
• AntWeb - Ant Species Database
• Spider ID - Spider Species Database / Identification Community
• Macroinvertebrates - Freshwater Macroinvertebrates Atlas
• Life Under the Ice - View Antarctic Microbes
• Pteros - Pterosaur Database
• WFO - Plant Database
• The Ferns - Tropical Plant Database
• ISODN Biology - ISODN Biology Discord Community

Med School

• r/MedicalSchool Wiki - Med School Resources
• ️ Health Resources
• Khan Academy - Physiology / Pathology Overviews
• Radiopaedia or Radiology Assistant - Radiology Resources
• ⁠Stop the Bleed - Free First Aid Video Courses / Resources
• MDCalc, MSD Manuals or Epocrates - Medical Reference Sites / Tools
• Geeky Medics, UC San Diego CG or Easy Auscultation - Clinical Guides
• LibreTexts Med - Medical Learning / Guides
• Get Body Smart, Kenhub or University of Michigan Anatomy - Anatomy Guides
• AnatomyLearning, ⁠Clara Atlas or BioDigital - 3D Human Anatomical Models
• NIH Print - Biomedical Science 3D Models
• Sectional Anatomy - Cross Sectional Educational MRI / CT Scans
• University of Minnesota Histology - Histology Guides
• Tulane University Pharmacology - Pharmacology Info & Quizzes
• Litfl or Healio ECG Review - ECG Information
• The ECG Course - ECG Video Course
• ECG Wave-Maven: Self-Assessment Program - ECG Practice / Learning
• Hyper Heart - Massey University Heart Animation
• Emergency Medicine Cases - EM Case Index
• EMCrit - Emergency Medicine Information
• DeployedMedicine (Sign-Up) or TCCC - Combat Medicine Guide / Manuals / Videos
• EMRap - Emergency Medicine Videos
• ⁠Lifesaver - Interactive CPR / First Aid Training Videos
• Calgary Guide - Disease Pathophysiology / Manifestation Flow-Charts
• MalaCards - Human Disease Database
• ⁠Folding@home - Donate Idle PC to Disease Research
• Epidemic Calculator - COVID Data
• Pathology Outlines - Pathology Info
• University of Utah Pathology - Pathology Guide
• The Iowa Virtual Slidebox - Pathology Atlas Software
• Nextstrain - Pathogen Evolution Tracking
• ⁠HemOnc - Hematology / Oncology Reference Site
• DermNet - Dermatology Reference Site
• ⁠EyeWiki - Eye Encyclopedia
• Passmedicine - UCAT Practice Questions
• UCAT Score - UCAT Score Converter
• r/medicalschoolanki - Community for Medical Anki Cards
• Erowid, dose.wiki/ or Shroomery - Educational Psychoactive Substance Reference
• PsychonautWiki - Educational Psychonautics & Pharmacology Database

Space

• r/Space - Space Subreddit
• Space Dashboard - Space Live Stream Dashboard
• NASA - National Aeronautics and Space Administration Website / Images / Audio / Documents / APIs / History
• March to the Moon, Apollo Image Atlas or ApolloArchive / Flickr - Apollo (Missions) Images
• Apollo in Realtime or FirstMenOnTheMoon - Interactive Apollo Missions
• Artemis II Photo Timeline - Artemis II Photo & Video Timeline
• ⁠Lunaserv Global Explorer - Interactive LROC / Moon Exploration Tool
• Marspedia - Mars Wiki
• ESA - European Space Agency Website /
• JAXA - Japanese Space Agency Website / Images / Videos
• CSA - Canadian Space Agency Website
• ISRO - Indian Space Research Organization
• Space.com - Space News
• ⁠Russian Space Web - Russian Space Program News / History /
• ⁠Mental Landscape - Soviet Space Exploration Archive /
• Encyclopedia Astronautica - Space Encyclopedia
• NASA+ - Official NASA Streaming Service
• NASA History / or NASA Ebooks - NASA Books
• ⁠Ask an Astronaut - Astronaut Interview Q&A Search
• ⁠Cosmos2025, Map of the Universe, ⁠Your Eyes In Space, Universe Atlas, Scale of the Universe, AndroidCelestia or SpaceEngine - 3D Universe Scale Explorers & Simulators
• NASA's Eyes or Celestia - 3D Space Visualizations / Solar System
• RGV Aerial Photography - Aerial Photography Community / News /
• TheCMB - 3D Cosmic Microwave Background Model
• ISODN Earth Science - ISODN Earth Science Discord Community

Astronomy

• Astronomy Resources - Astronomy Resources
• NASA2Explore, ESO Images or Astrobin - Astronomy Images
• JPL Photojournal or JPL Images - JPL Planetary Image Archives
• In The Sky - Astronomy News / Interactive Guides
• ISODN Astronomy & Astrophysics - ISODN Astronomy & Astrophysics Discord Community
• ViewSpace - Space Videos and Digital Interactives
• Sky Calendar - Astronomy Calendar
• Nights on Earth - Astronomical Event Calendar
• SolarHam, ⁠Space Weather (gov) or SpaceWeather - Space Weather News & Updates
• SunCalc, ShadeMap or MoonCalc - Sun / Moon Position
• Earth and Moon Viewer - Earth / Moon Latitude and Longitude Viewer
• SDO Dashboard - Live Sun Feed
• SkyViewer or 100,000 Stars - Interactive Star Visualizations
• ⁠Space Time or ⁠SpaceSim - 3D Solar System / Star System Simulators
• TheSkyLive, Solar System Scope, ⁠Luna Space Simulator or Atlas of Space - Solar System Simulators / Information
• CelesTrack - Earth Orbit Visualization
• Space Object Comparison - Compare Sizes Of Celestial Objects
• 1 Pixel moon, LightYear or OMG SPACE - Solar System Scale Model
• Astrogeology - Planetary Maps
• ⁠Eyes on Exoplanets or ExoplanetExplore - Interactive Exoplanet Explorers / Viewers
• ExoplanetArchive - Exoplanet Database
• AndroidPlanisphere - Android Star Chart
• Aladin - Astronomical Image Viewer / Lite Version
• Siril - Astronomical Image Processor
• ESAsky - Public Astronomical Data
• Stellarium-Web or Stellarium / - Virtual Stellariums
• WorldwideTelescope - Interactive Telescope Data / Home Page /
• ESA Hubble / , SpaceTelescopeLive / or HubbleSite / - Hubble Telescope Images
• James Webb Space Telescope / or ESAWebb / - Webb Space Telescope Sites
• Webb Compare - Webb / Hubble Images /
• APOD - Daily NASA Astronomy Images
• r/SpacePorn or r/Astrophotography - Astrophotography Subreddits
• Meteor Showers - 3D Meteor Shower Visualization
• Live Meteors - Live Meteor Radio Echoes
• Clear Dark Sky - Star Gazing Weather Forecasts
• Dark Site Finder, DarkSkyMap or GoStarGazing - Star Gazing Site Locators
• Light Pollution Map or lightpollutionmap - Light Pollution Maps

Spacecraft

• ️ Aerospace Engineering Resources
• ️ Satellite / Earth Data
• EarthData - Daily Satellite Replays
• Earth Observatory, Copernicus Browser, SpaceFromSpace, GOES-16 Satellite Imagery or Sentinel Hub - Satellite Imagery
• NASASpaceFlight - Launch Livestreams / News / Forum / / YouTube
• ⁠Next Spaceflight / / , ⁠Space Notices, nextrocket.space or RocketLaunch - Rocket Launch & Spaceflight Schedules / Trackers
• TonyBela Infographics - Spacecraft / Rocket Infographics /
• ⁠Historic Spacecraft - Spacecraft / Rocket Photos & illustrations
• ⁠HeroicRelics - Spacecraft Technical Information Archive
• ⁠Encyclopedia Astronautica - Spaceflight & Rocketry History Encyclopedia
• ⁠Starship Telemetry - Starship Flight Test Replays + Telemetry / /
• ⁠Ringwatchers - Starship Diagrams / Articles / Community / /
• Energia-Buran Archive - Energia-Buran Image Archive /
• Andegraf Rockets - Rocket Diagrams
• ⁠Gunter's Space Page - Satellite Encyclopedia / Launch Database /
• ⁠Sven's Space Place - Space Mission Technical Analysis
• Orbiter - Open Source Spaceflight Simulator / /
• Sen - ISS Live Feed + Video Archive / YouTube /
• ISS In Realtime - Historical ISS Mission Replays / Database
• ISS Sim to SPACEX - ISS Docking Simulator /
• Transit Finder, ISS Tracker, Spot The Station or Where The ISS At? - ISS Transit Tracking
• Satellite Map, KeepTrack / , SGP4 / , KeepTrackSpace, ⁠Track The Sky, Find Starlink, Space Atlas / , ⁠Périgée, ⁠azmth or Look4Sat - Satellite Orbit Maps / Trackers
• See A Satellite Tonight - Satellite Viewing Schedule / Locations
• ⁠Visual Satellite Observer - Satellite Viewing Guides / Information
• Spacebook - Evaluates / Tracks Satellite Collision Risks & Maneuvers
• Leolabs Space - Low Earth Orbit Simulator /

Aerospace Engineering

• ⁠Star Rocketry or Awesome Aerospace Engineering - Aerospace Engineering Learning Resources
• Awesome Flying FPV - Remote Copter / Plane Resources
• ️ Spacecraft Resources
• ️ Flight Resources
• ⁠r/AerospaceEngineering - Aerospace Engineering Community
• ⁠AerospaceWeb - Aerospace Info Database / Calculators / Q&A
• ⁠JetPhotos / Forums / , AirHistory or PlaneSpotters - Aircraft Indexes / Images
• Flight Mechanics - Aircraft Flight Mechanics Learning
• eCalc - Aerospace Engineering Calculators /
• ⁠Av8n - Aviation Physics Textbook
• SmartCockpit - Aircraft Systems / Technical Manuals
• ⁠F-16.net - F-16 Information, History, Images, Stories & more
• ⁠HeliStart - Helicopter Aerodynamics / Flight Mechanics Guides + History
• ⁠V2Rocket - A-4 & V-2 Rocket History / Resources
• Boeing 737 Technical Site - B737 Technical Engineering Guides / History / / YouTube
• OpenVSP - Aircraft Geometry Tool /
• UIUC Applied Aerodynamics Group - Airfoil Coordinates / Aerodynamic Research
• XFLR5 - Airfoils Analysis Tool
• Outerzone or ⁠AeroFred - Model Airplane Plans
• Airfoil Tools - Airfoil Coordinates / Dat Files

Rocketry

• ⁠The Rocketry Forum or Ye Olde Rocket Forum - Rocketry Forums / Community
• ⁠r/rocketry - Rocketry Community /
• Nakka Rocketry - Rocket Technical Archive
• JCRocket - Rocketry Technical Information / YouTube
• Half Cat Rocketry - Liquid Rocket Guide / Info / Resources / Documentation / / /
• Robert’s Rocket Project - LOX/Kerosene Liquid Rocket Info / Resources / Documentation
• ⁠OpenRocket - Rocket Simulator / Wiki / /
• ⁠RocketReviews - Rocket Reviews / Test Results
• ThrustCurve - Rocket Motor Performance Database
• ⁠MIT Rocket Team - Official MIT Rocket Team Wiki / Wiki / Resources
• ⁠Jacobs Rocketry - Rocketry Info / Manuals
• Tripoli Rocketry or ⁠NAR / Facebook - High-Powered Rocket Resources / Info
• ⁠Hot Nozzle Society - High-Power Rocketry Guide / Community / /
• ⁠RocketPy - High-Powered Rocket Simulator / /
• openMotor - Internal Ballistics Simulator

Drones

• ⁠UAVs FYI - Drone Information, Resources, Hardware & Supply Chain Analysis /
• ⁠OscarLiang.com - FPV Drone Tutorials / Reviews /
• RCPlanes Online - RC Plane Aerodynamics / Guides
• ⁠My Balsa & Glass Workshop - RC Model Builds
• OpenDroneMap / or WebODM - Drone Mapping Software
• Open Drone Logbook - FOSS Drone Log / / /
• Stolen Drone - Stolen Drone Info

Simulators

• Falcon BMS - Falcon 4.0 Modernization Project / Manuals / Wiki / Forum / YouTube / /
• FlightGear - Open-Source Flight Simulator / /
• Phoenix RC - RC Plane + Helicopter Simulator
• SeligSIM or PicaSim / - Flight Simulators for RC Planes
• CKAN - Kerbal Space Program Mod / Dependency Manager
• Luna Multiplayer - Kerbal Space Program Multiplayer Mod / /
• ⁠SatModeler - Satellite Mission Simulation Software / Signup Required

History

• ️ Historical Film Archives
• ️ History Books
• ️ Historical Maps - Map Resources
• Historic Films or National Film Preservation Foundation - Historic Footage / Films
• Histography - History Timelines
• MorbidKuriosity - Dark History, Conspiracies, Crime, Myths, etc.
• LibreTexts History - History Learning Texts
• Smithsonian Institution Archives, ⁠Princeton Digital Collections or Rare Historical Photos - Historical Photos / Documents
• Museo - Museum Search
• ⁠The Rest is History Archive - Era-Based Historical Podcast
• ⁠Arachne - Archaeology Object Database
• Wonderous - Learn About Ancient Structures
• ⁠Pantheon - Historical Figure Database + Trivia
• Shorpy - Historical Photos
• ⁠Historic Aerials - US Historical Aerial Imagery / Maps
• EyewitnesstoHistory - Historical Eyewitness Testimonies
• HMDB - Historical Marker Database
• ⁠London Remembers - London Historical Marker Database
• ⁠dark-tourism - Respectful / Non-Sensationalist Guide to Historical, Memorial & Dark Tourism Sites
• ManuscriptMiniatures - Medieval Manuscript Images
• Emblematica Online - Renaissance Emblem Book & Image Archive
• ⁠Ancient Graffiti - Early Roman Handwritten Inscriptions
• BlackPast - African History Encyclopedia
• Athena - Greek History Encyclopedia
• Mission US - American History Learning Games
• On This Day - What Happened on Specific Days
• Royal Constellations - Royal Family Ancestral Visualization
• ⁠WildWinds - Ancient Numismatics / Coin Database
• The Food Timeline - Food History Timeline
• Historical Recipes or Tasting History - Historical Recipes
• ⁠Gode Cookery - Authentic Medieval Recipes & Historical Info
• ⁠The Food Historian - Food History Blog
• SmartHistory - Art / Cultural Object History
• Gwulo - Historical Hong Kong Photo Archive
• CARI or CARI Are.na - Design Aesthetics History
• ChinesePosters - Chinese Propaganda Poster History
• ⁠Fashion History Timeline or Historical Fashion - Historical Fashion Resources / History
• PessimistsArchive - Historical Technological Pessimism Archive
• ⁠Anthropeum - Historical Artifact Guessing Game
• Time Portal, ⁠WenWare or TimeGuessr - Historical Time-Period GeoGuessr
• Forebears or Behind the Name - Name Etymologies

Tech History

• ️ Gaming History / Preservation
• ⁠Historical Tech Tree / or Calculating Empires - Historical Discovery / Tech Timelines
• ETHW - Engineering and Technology History Wiki
• Museum of Obsolete Media - Physical Media Format Wiki / History
• BetaWiki / - Operating System / Software History
• Old Computer Museum - Computer History
• The Retro Web / / or ⁠Hardware Museum - Computer Hardware History
• ⁠HP Computer Museum or The HP 9845 Project - HP Computer History
• Folklore / or TheAppleWiki / - Apple Computer History
• Crypto Museum - Cryptographic Machine History
• VGA Museum - Graphic Cards History
• Virus Encyclopedia - Computer Virus History
• MobilePhoneMuseum - Mobile Phone History / Info
• ⁠ObsoleteSony or WalkmanLand - Portable Audio Player History / Databases
• ⁠Web Rewind - Interactive Web History
• ⁠Web Screenshots - Website Screenshot Archive
• InfoMesh - Web History / Info
• VersionMuseum - Website History / Info
• info.cern - First Website on the Internet
• TubeVault - Archive of Oldest YouTube Users & Videos
• ⁠rip.so, Killed By Google, Killed by Mozilla, Microsoft Graveyard or Sued by Nintendo - Dead Project Archives

Military / Conflict History

• ⁠WW2 Links - Educational WW2 Resources
• De Re Militari - Medieval Military History
• Royal Armouries Collections - Armaments Museum /
• ⁠Battle Order - Historical Military Infographics /
• ⁠TracesOfWar - Military History & Battlefield Landmark Archive / /
• ⁠World War II Database or ⁠HyperWar - WW2 History Databases
• WW2 in 100 Objects - WW2 Museum Virtual Tour
• Smithsonian Institution Archives - WW1 and WW2 Image Archive
• ⁠Little Friends - WW2 8th Air Force History Archive
• U-boat Archive - WW2 Battle of the Atlantic Historical Archive /
• Nuremberg Trials Project - Nuremberg Trials Document / Transcript Archive
• ⁠CherriesWriter - Vietnam War Stories, Photos, Videos and more
• ⁠VietnamGear - Vietnam War Gear Info / Photos
• ⁠Center of Military History - U.S. Military History / Collection
• ⁠Vintorez - Russian & Soviet Military Gear Info / Photos /
• Imperial War Museums - British & Commonwealth War Footage /
• ⁠Anzac Portal - Australian Military History / Stories
• Tank Archives - WW2 Armoured Warfare Documents /
• NHHC, ⁠RNRA, ⁠NavSource, WarshipsResearch or ⁠The Dreadnought Project / - Naval & Maritime History Sites
• ⁠NavWeaps - Naval Weapons, Technology and Reunion History
• ⁠Coast Guard Historian's Office - U.S. Coast Guard History / Collection
• Shipbucket - Scale Drawings & Blueprints of Naval Ships /
• ⁠Warbirds Resource Group - Military Aviation History Encyclopedia
• ⁠RAF Museum - Royal Air Force Historical Collection / Stories
• Harald Joergens Panoramas - Aircraft Virtual Tours
• ⁠Warbird Alley or ⁠Forgotten Aviation - Historical Archives of Military Aircraft
• ⁠F-16.net - F-16, F-22 and F-35 Info, History, Images, Stories & more
• The History of Maritime Piracy - Piracy History Blog
• Byzantine Military - Byzantine Military History
• 911 Realtime - 9/11 in Real-Time /
• Atom Central - Historical Archive of Atomic & Nuclear Tests / YouTube
• NuclearWeaponArchive - Nuclear Weapons History

Mythology / Folklore

• GodChecker - Historical Mythology Encyclopedia
• Theoi - Greek Mythology
• ⁠Mythopedia - Historical Mythology Encyclopedia
• Germanic Mythology - Germanic Mythology
• Inuit Myths - Inuit Mythology
• ObscUrban Legend Wiki - Mythology / Urban Legends
• Encyclopedia Mythica - Mythology / Folklore / Religion
• FolkTexts - Mythology / Folklore
• Mythology.net - Mythology / Religion
• Japanese Mythology or Yokai - Japanese Mythology / Folklore
• ABookOfCreatures or Bestiary - Mythical Creature Encyclopedias
• BlackDrago - Dragon Encyclopedia

Humanities

World Data

• Awesome Datasets - Public Datasets
• Worldometer, TheScaleOfLife, WorldBank, US Census, DataUSA, Data.gov, Worlddata, ⁠OpenFactBook or UN Data - World Data & Statistics
• Our World in Data - World Problem Database
• Data Commons or Engaging Data - World Data Visualizations
• If It Were My Home, GlobalEdge or MyLifeElsewhere - Country Data Comparisons
• ⁠CityPopulation - Location / Population Data
• City Data - US City Data
• ⁠Pantheon - Historical Figure Database + Trivia
• Rulers.org, ⁠World Statesmen or EveryPolitician / - World Heads Of State & Government Databases
• OpenSanctions - Government Sanctions Database /
• World Births and Deaths - World Birth / Death Rates Visualization
• SIPRI Database - Global Military Data
• DataUNODC - Drug / Crime Statistics
• Gun Violence Archive - Gun Violence Statistics
• Incarceration in Real Numbers - Incarceration Visualization / Facts
• Climate Data, ⁠Climate Change Tracker, Climate.us or Climate Explorer - Climate Change Data
• En-ROADS - Climate Solutions Simulator
• ExtremeWeatherWatch - Extreme Weather Data / Tracking
• Global Volcanism Program - Volcano Information Database

Geography / Sociology

• Soar, ArcGIS Living Atlas, ⁠WorldAtlas or Cool Maps - Atlases
• Country Infographics - Country Infographic Images
• ️ Historical / Modern Maps
• ️ GeoGuessr Resources
• Ekvis / / , JetPunk Geography, LizardPoint, Teuteuf, ⁠Memorize Earth, ⁠GeoGrid, ⁠OpenGuessr or WorldFindr - Geography Quiz / Guessing
• LibreTexts Social Science - Social Science Learning
• LibreTexts Geosciences - Geoscience Learning
• ⁠Cultural Atlas - World Culture / Religion Guides
• AntipodesMap - Find Antipodes
• The True Size - Compare Country Size
• UNESCO World Heritage - World Heritage Location Index
• GovTrack - US Government Legislation Tracking / Votes
• iCivics - U.S. Law Learning Games
• LGA World Database - LGBT Legal Rights Map / Policy Tracking
• Trans Rights Map - Trans Legal Rights Map / Policy Tracking
• 8000ers - Mountain Visualization & Info
• WorldLicensePlates - World License Plate Index
• Symbols - Symbol Database

Vexillology / Flags

• Flags of the World, 2 / Search, Vexilo, Flagid or FlagLog - Flag Databases
• FAME - Flag / Coat of Arms Database
• r/vexillology or ⁠r/flags - Vexillology / Flag Subreddits
• Vexillology Discord - Vexillology / Flag Discord Community
• Flag Stories - Flag Design Breakdowns
• Flag Meanings - Flag Meaning Breakdowns by r/vexillology
• PrideFlags - LGBT Flag Database
• ⁠HOTW - Coat of Arms Database / Wiki
• ⁠r/heraldry - Heraldry / Coat of Arms Subreddit
• Flag Guesser, ⁠Flagle, FlagGuessr, Flagdle, ⁠flagdoku or Flag Match - Flag Quizzes / Guessing
• Vexle - Daily Flag Drawing Game

Economics

• ️ Finance / Market Resources
• The Atlas of Economic Complexity - Global Economic Growth Data
• ⁠Integrity Index - US Political Finance Integrity Database / /
• ⁠CORE Econ - Economics Textbooks
• OEC, ⁠UNCTAD or UN Comtrade - Global Trade Data
• ⁠CountryEconomy - Country Economic Data
• OEC Games - Trade Data Games
• Statista - Market Statistics
• BLS - U.S. Bureau of Labor Statistics
• ⁠OilPrice - Oil / Energy Price Tracking + News
• OpenSecrets - Government Money Tracking
• WorldPoverty - World Poverty Data
• Expatistan - Cost of Living Calculator
• Cost of Living - Cost of Living Map
• MoveMap - North America Property Costs Map
• ⁠Opportunity Atlas - Interactive Future Success Impact Map
• HungerMap - Global Hunger Map
• ⁠Wealth Shown to Scale - Global Wealth Inequality Visualization
• ⁠Wealth Inequality in America - America Wealth Inequality Visualization
• Unequal Scenes - Scenes of Inequality Around the World
• Dollar Street - Compare Homes by Country / Income
• Netblocks - Find Impact of Internet Shutdown on Economy
• ⁠Is AI Profitable Yet? - Track Total Amount Spent / Revenue of AI Companies

Philosophy

• Stanford Encyclopedia of Philosophy, IEP or nLab Philosophy - Philosophy Encyclopedias / Search
• Early Modern Texts - Early Modern Philosophy
• Philosophy Bro, LibreTexts Philosophy, Reasoned, TheDailyIdea or PhilosophyBasics - Philosophy Resources / Learning
• Wireless Philosophy - Philosophy Videos
• ⁠The Internet Classics Archive - Classic Philosophy Literature
• ⁠1000-Word Philosophy - 1000-Word Essays on Philosophical Topics
• Untools - Better Thinking Tools
• ⁠Landscape of Consciousness - Consciousness Theory Index
• Brainkit - Learn Helpful Principles
• Art of Manliness - Develop Life Skills
• Sketchplanations - Explanation Sketches
• IEoP, YouLogicalFallacyIs, FallacyFiles or LogicalFallacies - Learn about Logical Fallacies
• RationalWiki - Pseudoscience Refutation Wiki
• YourBias.is - Learn about Biases
• ⁠The Cognitive Bias Codex - Interactive Cognitive Bias Infographic
• ⁠Philosophy Stack Exchange - Philosophy Forum
• Kialo - Debates / Discussion
• ⁠Effective Altruism Forum - ⁠Effective Altruism Learning / Forum
• Open Logic Project - Math Logic Teaching Materials
• Umsu - Analytic Tableaux Generator
• Proofs - Natural Deduction Proof Checker
• PropCalc - Propositional Logic Calculator
• ModalLogic - Model Logic Playground
• Logitext - Sequent Calculus Tutorial
• WikEnigma - 'Known Unknowns' Wiki
• The Trolley Problem Game - The Trolley Problem
• Social Engineers - Social Engineering Guides

Skills / Hobbies / DIY

• ️ Photography / Cameras
• ️ Fashion / Clothing
• ️ Typing Tests / Games
• ️ Puzzle Games
• Knots 3D, Animated Knots or NetKnots - Learn to Tie Knots
• Ian's Shoelace Site - Learn to Tie Shoelaces
• Make it Yourself, Instructables or CreativePark - DIY Projects / Crafts
• ⁠Low Tech Magazine - Sustainable DIY Tech Guides
• Toys from Trash - Use Everyday Items to Make Toys
• ⁠Craft Yarn Council or Crocheting101 / 2 - Knitting + Crochet Learning
• Antique Pattern Library - Antique Pattern Library / Knitting + Crochet
• ⁠BraceletBook - DIY Bracelet Pattern Database
• HamExam, AA9PW or HamStudy - Ham Radio Practice Exams
• ARRL - Amateur Radio Resources / Learning / Exam Search / Question Pools
• QRZ - Amateur Radio Call Sign Database / Forums
• Perry Morse, Morse Typing Trainer or ICWO - Learn / Practice Morse Code
• Lock Picking 101 - Lock Picking Forum
• LibraryOfJuggling - Juggling Technique Database
• diyhpluswiki - DIY Biohacking
• ⁠Online Coin Club - Coin Collectors Database / Info
• ⁠WildWinds - Ancient Numismatics / Coin Database
• Activist Handbook or Privacy Guides Activism - Campaigning / Activism Guides
• Bridge Command - Bridge Command Ship Simulator
• UER - Urban Exploration / Abandoned Place Forum / MAP
• PaperToys - Printable Paper Toys
• Fold N Fly - Paper Airplane Guides
• AXM Paper Space Scale Models - Spacecraft Paper Models
• ⁠ExplOri 22.5 - 22.5 Degree Origami Design Tool /
• HypnosisChatBooks - Hypnosis / Telegram

Survival / Preparedness

• ️ Map Resources
• Survivor Library, Kiwix Library or OffGridDownload - Survival Book Collections
• SurvivalManual - Survival Manual / App
• ExploreMarMaris - Survival PDFs
• Trail Sense - Wilderness Survival App /
• ⁠Wikiciv - Survival / Civilization Rebuilding Wiki /
• CD3WD Project - Sustainable Development Information
• The Preparedness Encyclopedia - Preparedness Encyclopedia
• r/Preppers - Preparedness Subreddit
• r/PrepperFileShare - Preparedness File Sharing
• Project NOMAD - Self-Contained Offline Knowledge + Off-Grid Database /

Music

• Awesome Music Theory - Music Theory Resources
• ️ Sheet Music / Notation
• Muted, Open Music Theory / 2, Chromatone, Teoria, SimplifyingTheory, ⁠Teoria, LightNote or Music Theory - Music Theory Learning
• LibreTexts Music - Music Learning
• ⁠Z-Tonnetz - Music Visualization Tool
• AudioZ - Audio Courses / Forum
• ProducerLibrary - Audio Production Tutorials
• Helio / or NoteHeads - Music Composition Tools
• Circle of Fifths - Visualize Notes, Chords and Keys
• ScoreCloud, ChordReader2 or Chordify - Chord Detection / Transcriber
• Arpeggiator, Chordi, Chord Player or AutoChords - Chord Progression Generators
• HookTheory - Chord Progression Library
• LilyPond - Music Engraving Program
• Piano Scribe - Piano Transcriber
• Learning Music or Musicca - Music-Making Lessons
• Midiano / , Piano Trainer / , ZaneH Piano Trainer / , Chord Nebula, sightread, ⁠Playsheet or PianoCheetah - Piano Practice / Learning
• ⁠Fundamentals of Piano Practice - Piano Practice Book
• TrueToneGuitar, Songsterr / Downloader, FAChords or ChordBook - Guitar Tools
• FretFlip, Oolimo, StringScales, My Fretboard Trainer, QFGM or GuitarScale - Learn Guitar Scales / Chords
• JamStart - Spotify Chord Charts
• #fretflip - Create / Print Guitar Scales & Chord Charts
• JustinGuitar or Warlock Guitar - Guitar Lessons
• Ultimate Guitar - Guitar Tabs
• Chorder - Guitar Chord Finder
• Guitar Fretboard, Fretastic or Gitori - Virtual Fretboards / Guitar Lessons
• ⁠StudyBass - Online Bass Lessons
• coop3rdrumm3r or FreeDrumLessons - Drum Lessons
• 911tabs or Finger Tabs - Tabs
• Jazz Improvisor - Improvised Jazz
• LearningSynths - Synthesizers
• Sight Singing Factory - Sight Singing Practice
• PerfectPitch - Pitch Recognition Practice
• MusicStaff - Music Teacher Search
• ChiffAndFipple - Irish Traditional Music Forum
• MIMO - Musical Instrument Database
• VGM Sound Sources - VGM Sound Sources /
• ⁠NTS Field Recording Guide - Field Recording Guide

Art / Editing

• Creator Resources - Art & Animation Resource Index
• AwesomeAnimeResearch - Anime Machine Learning
• ️ Digital Art Collections
• Art Study Guide - Art Study Guides / Tips
• Drawabox / , Drawing Starter Pack Playlist or FarsiTuts - Drawing Lessons
• Proko - Figure Drawing Lessons
• PaintingTube, MarcoBucci, Alphonso Dunn, Feng Zhu FZD, ⁠Ctrl+Paint, Art Fundamentals or Circle Line Art - Art Video Tutorials
• Ubu - Avant-Garde Artifacts
• Online-Courses - Art / Design Courses
• TutsPlus - Creative Courses
• Curriculum for the Solo Artists - Self-Taught Artist Curriculum
• DoArtDaily - Daily Art Challenges
• Character Design References - Character Design Visual Library
• FloobyNooby, JMMStoryboardTips or A Guide to Storyboards - Storyboard Guides
• Settei Dreams - Anime Production Materials
• Anime Study General - Anime Production Community
• McLelun - Anime Style Background Tutorial
• AnimeOutline - Anime / Manga Drawing Tutorials
• Design Tuts - Design Tutorials
• PhotoshopTutorials.ws - Photoshop Tutorials
• DomDesigns - Illustrator Tutorials
• PhotoshopTraining, Phlearn or PiXimperfect - Photoshop YouTube Tutorials
• ⁠Practice Drawing This - Drawing Practice
• The Bézier Game - Pen Tool Practice
• ArtWithFlo - Procreate Tutorials
• Paintable - Digital Art Tutorials
• Pedro's Pixel Art Tutorials or SLYNYRD - Pixel Art Tutorials
• MetPublications - Art Learning Books
• GraphicsCodex - 3D Computer Graphic Guides
• ⁠The Etherington Brothers - Drawing / Animation Tutorials
• DrawingNow or ⁠Drawing Tutorials - Learn to Draw
• Drawingbooks.org - Old Drawing Books
• Line of Action, Timed Figure Poses, LoveLifeDrawing or Daily Life Drawing Sessions - Figure Sketch Tools / Lessons
• AnatomyArchive - Human Anatomy Drawing Tutorials
• Artist Reference - Photo References for Artists
• x6ud - Animal Photo Reference Search
• Thomas Romain Perspective - Perspective Guide
• Dimensions - Object Dimension Reference
• ⁠Storied Colors - Historical Catalog of Colors / Pigments
• DevinKorwin Color Guide - Color in Paintings Guide
• Draw Mix Paint or ⁠Ran Art Blog - Learn Oil Painting
• Painting Demos - Painting Demonstrations
• cg_tuts or cgreferenceshub - CG Tutorials
• Seven Camels - Storyboarding Tips / Learning by Disney's Head of Story
• Agora - Animation Learning Community / Tutorials /
• AMV101 - Animated Music Video-Making Guides

Rubiks Cube

• Cubing.net - Cubing Tools
• Rubiks Cube Guide - Guide to Rubiks Cube / Resources
• ️ Cube Simulators / Solvers
• J Perm, CubeSkills, RubiksTrainer or Easiest Solve - Cubing Tutorials / Practice Resources
• CubeDesk or csTimer - Feature-Rich Cubing Timers
• SpeedCubeDB - Algorithm Database
• F2L Trainer - F2L Rubiks Trainer
• ⁠crystalcube - CFOP Cross Trainer / Edge Orientation Trainer
• ⁠ZZ Method - Learn / Practice ZZ 3x3 Rubiks Speedrunning Method
• Roux Trainers - Learn Roux Solving Method
• SpeedSolving / Wiki or Ruwix - Cubing Wiki / Community Forum
• World Cube Association - Cubing Competitions & Records
• alg.cubing.net, CubeDB, or Tao Yu Trainer - Algorithm Animators / Visualizers
• F2L Trainer - Algorithm-Specific Trainers
• BlindTrainer - Blindfolded Rubik's Trainer
• Hypercubing - Hypercubing Wiki
• Speedcube.app - Cubing Timer (Mobile-Friendly)
• SolveTheCube - Cubing Timer
• qqTimer - Cubing Timer

Chess

• TheChessDirectory, Immortal Chess Network or Chess Resources - Chess Resources
• /m/Chess or r/Chess - Chess Subreddits
• r/Chess Books - Community Recommended Books
• ️ Play Chess Online
• Pawn Appétit or En Croissant - Modern Chess GUI & Database Manager / / Databases
• Lucas Chess - Chess Training Software
• Chess Tempo - Tactics Training / Endgame Solver
• Scid vs. PC - Chess Database Software
• Lumbra's Gigabase - Cleaned Master Game Database
• OpeningTree - Opening Repertoire Tree & Scouting Tool for Lichess & Chess.com
• Maia Chess - Human-Like AI Training Opponent & Blunder Modeling
• Listudy - Spaced Repetition Openings, Blind Tactics & Endgames
• Blitz Tactics - Fast-Paced Chess Puzzle Training
• Tactic or Not - Evaluate Tactics /
• ⁠Chessort - Chess Move Evaluation Training
• Shâh Kur - Blindfolded Chess Practice
• TheChessWebsite - Learn / Practice Chess
• ⁠Chess Frog - Chess Challenges
• ChessLab - Learning Community /
• Chess Coach - Chess Coaching App
• Chess Vision or Chess OCR - Scan Chessboard Diagrams & Images Into Engine Analysis
• Chess Monitor - Performance & Analytics Dashboard for Lichess and Chess.com
• WintrChess, Chesskit / or Chess Analysis / - Web Game Review & Engine Analysis
• ChessBlunders - Analyze Match Mistakes
• ChessMD - Chess Training / Match Analysis /
• Syzygy Tables - 7-Piece Endgame Tablebase Explorer
• The Week In Chess - Weekly PGN Chess Game Archives
• ChessGames - Historic Master Games Archive & Discussion
• Chess Results - FIDE Tournament Results Database
• ⁠Chess Second - FIDE Player Stats, Rating Histories & Opponent Scouting
• ⁠Olympiad Stats - Chess Olympiad Statistics / Round Analysis
• 365Chess - Chess Database / Opening Explorer
• 2700chess - Live Ratings for Super Grandmasters
• YottaChess - Professional Player Database
• ChessBase / India - Chess News, Articles & Tournaments
• Visual History of Chessmen - Chessmen History Guide

Go / Baduk / Weiqi

• Go Magic: How to Play Go - Beginner Go Tutorial
• r/baduk - Reddit community for Go / Baduk / Weiqi
• Online Go Server (OGS) - Modern Online Go Platform /
• Sensei's Library - Comprehensive Go Wikipedia
• Sabaki - Go Board & SGF Editor
• ⁠Kaya - Go (Baduk/Weiqi) Board Analysis Tool /
• Black to Play - Go Puzzles
• KataGo or KaTrain - Open-Source Neural Network Go AI
• The Interactive Way To Go - Interactive Beginner Tutorial
• Josekipedia - Dictionary for Corner Openings
• Waltheri's Go Pattern Search - Pro Game Pattern Search Engine
• GoProblems - Tactical Puzzle Database
• GoKibitz - Game Reviews and Community Feedback
• Baduk.club - Map of Go clubs and Players
• KGS Go Server - Classic server / Teaching Community
• Igowin - 9x9 Desktop Go AI for Beginners

Dungeons & Dragons

• ️ D&D Building Tools - Map Editors, Campaign Managers, Worldbuilding, etc.
• D&D Compendium or RPGBOT - D&D Tools & Learning Resources
• 5etools, ⁠DM Screen or The Acaeum - Rules & Content References
• D&D Beyond - Official Toolset for 5E
• Kobold+ Fight Club - Encounter Builder & Balancer
• Avrae - D&D Automation Discord Bot
• DnD-Books(4e,5e,5.5e) or D&D 5e BR / Use Translator - D&D 4E/5E Rulebooks / Manuals
• ⁠The Homebrewery / or GM Binder - Custom Rulebook & Document Creators
• r/UnearthedArcana - D&D Homebrew Content Subreddit
• Cruinne's D&D Reading Room - D&D Worldbuilding Checklist
• ⁠DiceCloud - D&D 5e Character Manager /
• ⁠DMHeroes - D&D NPC Generator / Classic
• Tetra-cube - Monster Statblock Generator

LEGO

• Awesome Lego - LEGO Resources
• ⁠Rebrickable - LEGO Collection Manager / Build Ideas
• ⁠Mecabricks Workshop, LeoCAD / or BrickLink Studio - Virtual LEGO Building / 3D Editors
• Brickset, ⁠BrickEconomy or Bricklink - LEGO Set Database / Reviews / Marketplaces
• ⁠Brickfact - LEGO Set Database / Price Tracker
• ⁠Brick Hound - LEGO Deal Alerts
• Brickognize - LEGO Brick / Minifigure Identification Tool
• ⁠MinifigScan - LEGO Minifigure Blind Box Identification Tool

Language Learning

Multi-Language

• Language Links, LibreTexts Languages, /int/ Guide, ⁠MondeLibrary or r/LanguageLearning Resources - Language Learning Resources
• Speechling - Language Learning Tools
• LexiLogos or Dictionary Index - Language Dictionary Indexes
• Talking Dictionaries - Endangered Language Dictionary Index
• Comprehensible Input Wiki - Learn Languages via Comprehensible Input
• ️ Translation Tools
• Language Transfer - Language Learning Lectures
• Yomitan - Popup Dictionary /
• Language Reactor, Dreaming / , 2, LLPlayer, Trancy or Easysubs - Learn Languages via Videos
• Readlang - Learn a Language via Web Browsing
• Omniglot - Writing System & Language Encyclopedia
• ⁠Lute - Learn a Language via Reading /
• ⁠Chimahon - Learn Languages via Manga, Novels & Anime /
• ⁠Lingotype - Learn Languages via Typing
• Language Learners - Language Learning Forum / Community
• WordReference, ⁠dict.cc, Glosbe, ⁠WikDict or Reverso - Translation Dictionaries
• ReverseDictionary or OneLook Reverse - Search for Words Using Their Meanings
• Languagelearning.site - Language Learning Torrents
• Refold - Language Learning Roadmap
• ⁠Lengualytics - Comprehensible Input Tracker / Resources
• LingoDeer or Busuu (search) - Language Learning Lessons
• Language Drops / Premium (search) or OkyDoky - Language Learning App with Thematic Vocab
• Yojik or FSI Language Courses, 2 / - Language Learning Courses
• DLIFLC - Language Learning Quizzes
• ⁠Danobang, ⁠Digital Dialects or Ba Ba Dum - Language Learning Games / Interactive
• LanguageGuide - Visual Language Learning
• clozemaster - Context-Based Language Learning
• Sounter, LingoClip or LyricFluent - Learn Languages via Music
• MORT or Textractor - Learn Languages via Games
• Language Roadmap - Foreign Language Media Difficulty Guide
• LearnWithOliver or ⁠Rosetta Stone (Flashcards) - Language Learning Flashcards
• MyLanguages, VocabTest, My Little Word Land or 50Languages - Grammar / Vocabulary Language Learning
• Vocatra, ⁠Conjuguemos or QuizFlow - Vocabulary Trainers
• ListLang - Most Used Words in Any Language
• LingYourLanguage or Language Squad - Language Identification Test
• ⁠Elara Archive - Endangered Language Video + Audio Archive
• IPA Reader - International Phonetic Alphabet Reader
• Interactive IPA Chart - Learn Phonetic Alphabet Symbols
• DialectArchive - Listen to Accents
• TeachMeHebrew - Learn Hebrew
• wehewehe - Hawaiian Dictionary
• ⁠Thai-Language - Thai Learning Resources / Dictionary
• Tōku Reo - Māori Language Learning Show /
• Itchy Feet Comic - Asian Script Differentiation Guide

Language Exchange

• The Language Exchange Network, 2 - Language Exchange Communities /
• Language Learning Discord Index - Language Learning Discord Servers
• InterPals
• Episoden
• Tandem
• Conversation Exchange
• RhinoSpike
• HiNative
• LangX /
• Polyglot
• ISODN Linguistics - ISODN Linguistics Discord Community

English

• Many Things - ESL Resources
• ESOL - English Learning Resources
• youglish or YouDict - YouTube Word Pronunciations
• Forvo or HowJSay - Pronunciation Dictionary
• The Internet TESL Journal - Resources for EFL and ESL Teachers
• EFSET - English Proficiency Test
• Spellcheck - English Spelling Game
• Learn English Online, ESLFast, AntiMoon, Oxford Online, ⁠Learn English or Cambridge Online - English Lessons
• EnglishCentral, BBC English, EngVid or Voscreen - English Video Lessons
• Frenglish, BooksMania or English E-Reader - English Learning Books
• elllo or Listening Lab - English Listening Lessons / Practice
• TalkEnglish or Stimuler IELTS Speaking Buddy - Improve Spoken English
• WriteAndImprove - Improve English Writing
• Elsaspeak - Practice English Conversations
• Spanish-English or English Chat - English Learning Community / Discord
• Jumpinto or IELTS69 - Cambridge English Practice Tests
• ⁠IELTS Liz - IELTS Test Preparation
• yell0wsuit or OxfordLearnersDictionaries - Word Learning Site
• ⁠English Phrasal Verbs - English Phrasal Verb Practice
• Podcasts in English - English Learning Podcasts
• Langeek - Grammar / Vocabulary Language Learning
• EnglishAccentMap - English Accent Videos / Map
• EnglishBanana - English Learning Worksheets
• Free4Talk - English Learning Communities

Japanese

• yame dame, Tatsumoto, GaijinRyman, Nihongo, Japanese Resources or AnimeCards - Learning Resources
• ️ Japanese Learning Sites / YouTube Channels
• ️ Dictionaries / Translation
• ️ Kanji Learning Resources
• ⁠Tsunahiro - Japanese Learning Videos
• Manatan / , ⁠Bettermelon, JapaneseWithAnime or Immersion Kit - Learn Japanese via Anime, Manga & Light Novels
• Nihongo con Teppei - Japanese Beginners Podcast
• JapaneseTab - Japanese Learning Extension
• ⁠Sakana Translate - English > Japanese Translator
• Minato - Japanese Courses
• Memento - Japanese Learning Video Player
• Supernative or LearnNatively - Learn Japanese via Media
• jidoujisho or Manabi - Learn Japanese via Books
• ⁠VNClub - Learn Japanese via Visual Novels
• Learn Japanese Grammar or BunPro - Learn Japanese Grammar
• OJAD - Japanese Accent Dictionary
• DelvinLanguage - Fill in Missing Japanese Words
• Jlpt N3 or JapaneseTest4You - Jlpt Exam Questions / Grammar
• GetKanda, Nihonoari, ⁠Kana or RealKana - Learn Kana

Korean

• Learn Korean - Korean Learning Discord
• Read Korean Letters - Learn Korean Characters
• KR Dict - Korean Learning Dictionary
• HowToStudyKorean - Korean Lessons / Practice
• iksi - Korean Classes
• TalkToMeInKorean - Korean Learning Courses
• Sogang or 90 Day Korean - Korean Learning Lessons
• Mirinae - Korean Word Breakdown
• National Institute of Korean Language - Korean Dictionaries / Expression Practice
• ⁠LetsLearnHangul - Hangul Learning
• Hangul Practice - Hangul Recognition Test
• UltimateKorean - Korean Grammar / Vocab Lessons
• KoreanKeyboardLearner - Korean Typing Practice
• Korean Trainer - Korean Numbers & Date Practice
• Hangul - Korean Typing Practice

Chinese

• YellowBridge or DigMandarin - Chinese Learning Tools
• ⁠Heavenly Path / , Cantonese Sheik, ⁠Baúl Chino, ⁠Refold Mandarin or SinoSplice - Chinese Learning Resources
• r/ChineseLanguage - Chinese Learning Community /
• Zhongwen - Learn via Classic Chinese Literature
• Train Chinese, ChineseSkill or HelloChinese - Chinese Learning Apps
• KongLongMandarin, DU Chinese or Dong Chinese - Chinese Lessons
• Stroke Order, LexList, ArchChinese or Hanzi Grids - Chinese Writing Lessons / Stroke Orders
• LexList, ⁠Hanly or Chinese Character Database - Learn Chinese Characters
• Dictionary Variants - Dictionary of Chinese Character Variants
• ⁠Sakana Translate - English > Chinese Translator
• HackingChinese - Chinese Learning Articles
• Cantonese.ca, CantoScrolls or Laoshi - Chinese Vocabulary
• Lindict, CantoWords, MDBG, LexList, Revised Dictionary, Concised Dictionary, Mini Dictionary or zdict - Chinese Dictionaries
• Maorma - Chinese Tone Practice
• The Chairman's Bao - Chinese Reading Practice / News Articles
• Pleco - Chinese Flashcards / Dictionary
• Chinese Flashcards - Chinese Flashcards

Cantonese

• Cantonese Sheik - Cantonese Learning Resources
• Live Lingua Cantonese - Free Cantonese Courses
• ⁠A Brief Cantonese Manual - Cantonese Beginners Manual
• EdUHK, OpenCantonese, polyu or eMini_MOOC2k - Cantonese Learning / Practice
• Cantonese.ca or CantoScrolls - Cantonese Vocabulary
• Beginner's Cantonese - Cantonese Grammar Lesson
• CantoWords or LexList - Cantonese Dictionary
• HKDict - Contemporary Cantonese-English Dictionary
• Cantonese Character Database
• OnlineCantonese - Cantonese Tone Practice
• CanPro / iOS - Cantonese Pronunciation App
• Jyutping or LearnDuck - Learn Cantonese Romanization System

European

• French Comprehensible Input or ⁠Refold French - French Comprehensible Input Resources
• ⁠Thesaurus Autumnalis - Latin Learning Resources
• StudySpanish - Learn Spanish
• SpanishDict or ⁠Linguee - Spanish Translation Dictionaries
• Spanish-English - Spanish Learning Community / Discord
• SpanishChecker - Spanish Grammar Check
• FluentWithStories - Learn Spanish via Stories
• The French Tutorial - French Learning Tutorials
• ⁠TV5MONDE - French Learning Videos
• LCSpeakFrench - Live French Lessons
• Uusi Kielemme - Finnish Learning
• Finnish Flashcards - Finnish Flashcards / Resources
• The People's Dictionary - Swedish Translation Dictionary
• ⁠Easy Croatian or ⁠HR4EU - Croatian Language Learning
• ⁠OpaLingo - Macedonian Learning Site
• ⁠Icelandic Online - Icelandic Learning Courses
• ⁠Latin & Ancient Greek - Latin & Ancient Greek Learning Community / Discord
• ⁠EIEOL - Early Indo-European Language Lessons & Lexicon

German

• ⁠German Learning Roadmap or German Resources - German Language Resources
• German Discord - German Learning Community
• DW German Course - German Learning Course
• VHS Lernportal - German Learning Course / Mobile
• Seedlang - German Learning App
• Linguee / 2 or Dict.cc - German Translation Dictionaries
• VerbForm - Create German Verb Anki Flashcards

South Asian

• Urdu Resources or UrduNotes - Urdu Learning Resources
• Mga Nagmamarunong's Masterlist - Tagalog Learning Resources
• Learn Sanskrit or Sanskrit Studio - Sanskrit Lessons and Tools
• Rekhta Dictionary - Urdu Dictionary
• South Asian Languages - South Asian Language Learning
• Urdupod101 - Urdu Grammar Overview / Video
• ⁠Speak Pashto - Pakistani Pukhto Learning Guide
• Sanskrit Subreddit / Resources - Sanskrit Resources / Discussion
• Ambuda - Sanskrit Dictionaries / Texts

Sign Languages

• SpreadTheSign, Sign Dictionary or SL Dictionary - Multi-Language Dictionaries
• ASL Dictionary, Anysign, WhatsThatSign, StrongASL, LifePrint, ASLDict, ASLCore, Sign Language 101 or HandSpeak - American Sign Language Dictionaries
• BSL Dictionary, SignDeaf, BSL Signbank, MobileSign or Signd - British Sign Language Dictionaries
• SignWiki - Sign Language Wiki Index / Multi Language
• Text to Sign - Convert Text to Fingerspelling in ASL or BSL
• Rochester ASL / LSF - ASL / LSF / Click Dictionary
• SignLex - Interactive Sign Dictionary / Learning
• ⁠Helping Hands - VR-Based Sign Language Practice / Classes /
• Signbank - Australian Sign Language Dictionary
• NZSL - New Zealand Sign Language Dictionary
• SSC - BSL Academic Term Dictionary
• BKS - British Key Word Signs
• International Sign - International Sign Language
• DeafTec or Tachyo - STEM Sign Dictionaries / Search
• Interpreter Services - Specialized ASL Dictionary
• ASL Learning, SignSchool or PocketSign - ASL Learning Sites
• Sign AIP - Sign-Language Learning Videos
• Fingerspell - ASL Fingerspelling Practice
• The ASL Calendar or ASL Discord - ASL Learning Discord Communities / Resources
• ⁠SooSL - Create Custom Sign Language Dictionaries
• ASL-LEX - ASL Visual Connections Map / Visualization
• DeafVideo - ASL Vlogs + Videos / YouTube Style Site for Deaf Content
• ⁠Iltyem-iltyem - Australian Indigenous Sign Language Learning
• Learn NZSL - NZSL Learning Site
• ⁠RealSASL - South African Sign Language Dictionary
• HandyBSL - Learn / Practice BSL
• SignLearner - Learn ASL or BSL while Browsing Internet / Chromium
• Signs - ASL Learning AI
• SignWriting - Sutton SignWriting System Learning + Resources
• Learn BSL in SignWriting
• DPAN, Deaffest (Sign-Up), DMDb or Lumo TV - Deaf Entertainment / News
• DMDb or Sign on Screen - Deaf Movie Databases / Sign Language Films / Deaf Actors

Constructed Languages

• ⁠Links from Esperanto - Esperanto Learning Sites Index
• ⁠pona.la - Toki Pona Learning / Resources
• Lojban.io - Lojban Learning Resources / Focused on Logical Grammatical Structures
• ⁠Languages of Arda - Guide to Tolkien Languages
• ⁠Esperanto12 or ⁠Esperanto in 17 Minutes - Esperanto Learning
• Toki Pona (.net), Toki Pona / , ⁠mun!, ⁠lipu sona mi pi toki pona, lipu sona pona, ⁠Jan Lope Toki Pona, DuoStories Toki / 2 or Wasona / - Toki Pona Learning Sites / Minimal Language
• ⁠ma pona pi toki pona (discord) - Toki Pona Community / Learning / Resources
• ⁠sona pona - Toki Pona Wiki / Minimal Language
• Toki Pona Dictionary, ⁠nimi.li / or Linku / / Audio - Toki Pona Dictionaries
• Semantic Spaces Dictionary - Toki Pona Word Explanations / Dictionary
• ⁠lipu tenpo - Toki Pona Magazine
• Ithkuil by Example - Ithkuil Learning
• Ithkuil - Ithkuil Learning / Focused on Logical Precision
• The Toaq Language - Toaq Learning Wiki / Course / Focused on Formal Logic /
• ⁠Viossa Diskordserver (discord) - Viossa Language Learning Community / Artificial Pidgin Language
• Eberban / or Learn Eberban - Eberban Language Learning / Focused on Simplicity, Expressiveness & Regularity
• Xextan - Xextan Language Learning / Focused on Simplicity + Ease of Learning / Wiki /
• ⁠Thuum - Guide to Dovahzul (The Elder Scrolls Language)
• Learn Na'vi - Guide to Na’vi (Avatar Language) / Community / Forum /

Developer Learning

• Project Based Learning - Project Based Learning Resources
• Awesome Certificates / - Dev Course Indexes
• Awesome YouTubers - YouTube Dev Channels Indexes
• r/LearnProgramming Wiki, Programming Learning Index, ⁠awesome-opensource-documents or A-to-Z-Resources-for-Students - Programming Learning Resources
• Roadmap - Developer Roadmaps /
• Path to Senior Engineer or Professional Programming - Software Engineer Resources
• ️ Programming Books - Read / Download Programming Books
• freeCodeCamp - Programming / Courses / Interactive
• git-cheat-sheet, Git Commands or Git Cheatsheet - Git Command Lists
• OpenVim - Interactive Vim Tutorials
• Build your own X - Advanced Coding Tutorials /
• StarSQL, ⁠SQL Practice or Learn SQL - SQL Lessons / Practice
• Programiz, TutorialKart, Ultimate Programming, Hackr.io, GeeksforGeeks, ⁠W3Schools or Tpoint Tech / - General Coding Tutorials
• Guru99 - Software / Web Development
• Codelabs - Project Based Tutorials
• The SHA-256 Project - Learn to Develop SHA-256
• calmcode - Video Tutorials
• zetcode - Programming Notes / Ebooks
• Ebook Foundation - Programming Ebooks
• First Timers Only - Contribution Guide for Beginners
• Beej's Guide to Git or Git Tips - Git Guides / Tips
• Oh My Git! or Oh Shit, Git!?! - Git Learning Game
• Git Tutorial - Interactive Git Tutorial
• Learn Git Branching - Interactive Git Branching Guide
• Git Time - Git Learning Game
• Hack Club - Non-Profit High School Coding Community / Resources /
• DevToolTips - Developer Tips
• Checki0 - Code Learning Games
• Scrimba or ⁠VittaScience - Interactive Programming Learning
• CloudSkillsBoost - Programming Courses
• ⁠MOOC.fi - Programming Courses
• EggHead - Programming Courses
• TechSchool - Programming Courses /
• ⁠Josh Comeau - Programming Tutorials
• Scratch / Firefox Extension / Chrome Extension / Package Projects / Increase Speed, 2 / Wiki / Guides / or ⁠MIT App Inventor - Beginner Programming Learning
• USACO Guide - Competitive Programming Lessons
• ⁠Codeforces - Competitive Programming
• Beej's Guides or LearnByExample - Programming Guides
• CodinGame - Games to Practice Coding / Programming
• Advent of Code - Programming Puzzles
• Interview University - Software Engineer Study Guides
• System Design 101 or system-design-primer - System Design Guides
• CLIG - CLI Design Guide /
• LearnToCloud - Cloud Computing Guide
• ⁠Server Survival - Tower Defense Game for learning Cloud Architecture /
• Swift Playgrounds - Learn Swift UI / Samples
• ⁠VimTricks - Vim + Neovim Tricks / Cheat Sheet
• ⁠Learn Vim - Vim + Vimscript Learning Guide
• rTorr - Vim Editor Cheat Sheets
• Vim University - Vim Tips
• VimTip - Vim Editor Tips
• ⁠Learn Shell - Interactive Shell Programming Tutorial
• ⁠Assembly Tutorial - AMD64 / Intel 64 bit Programming Tutorial
• High Assurance Rust - Software Development Guide
• LearningSEO.io or SEO Cheat Sheet - SEO Learning
• SQL PD, SQL Noir, Lost at SQL or SQL Easy - SQL Learning Games
• PostgreSQL Tutorial - PostgreSQL Tutorial
• MySQL Tutorial - MySQL Tutorial
• LearnOpenGL - Learn OpenGL
• Devops Exercises - DevOps Exercises
• 90DaysOfDevOps - Learn DevOps
• Hasura - GraphQL Courses
• systemd-by-example - systemd Learning
• The Linux Kernel - Linux Kernel Development Guides / Archives
• Workbench - Learn / Experiment with Gnome /
• botwiki - Learn How to Make Bots

Programming Languages

• Python Discord - Python Learning Resources
• 30 Days Of Python - Python Programming Challenge
• Hitchhiker's Guide to Python - Python Guide /
• Typing.io or Silver Dev's WPM - Programming Typing Practice / Sign-Up
• A Byte of Python - Python Guide
• Learn Python - Interactive Python Guide
• FutureCoder - Interactive Python Guide
• ⁠Genepy - Interactive Python Guide
• Learn-Python - Python Playground / Cheatsheet
• CS50 - Python Course
• Tea Press - Python Learning Book
• Pydroid 3 - Android Python IDE + Learning
• Learn C - C Tutorials
• C++ Core Guidelines / or modern-cpp-tricks - C++ Tips
• Learn C++ or StudyPlan - C++ Lessons / Tutorials
• Makefile Tutorial - Makefile Tutorial
• AmigosCode, Java Design Patterns, Modern Java or learncs.online - Java / Kotlin Guides
• Learn Next.js - Next.js Learning Resources
• LearnGo or Tour Go - Learn Go Programming
• Rust Learning - Rust Learning Resources
• Poignant or Try Ruby - Learn Ruby
• Learn Perl - Learn Perl

Web Development

• MDN or Web Dev Resources - Web Dev Learning Resources
• Odin Project, 2 - Programming / Courses / Interactive /
• FullStackOpen - Full Stack Course /
• LandChad, 32bit or learn.sadgrl.online - Site Development Guides
• Learn to Code HTML & CSS, ⁠CSS Tricks, CSS Tip or ⁠HTML Hobbyist- HTML/CSS Learning Sites
• PHP: The Right Way, Learn PHP or PHP Tutorial - Learn PHP
• JavaScript.info, Patterns.dev or 30 Days Of JavaScript - JavaScript Learning Sites
• ⁠Cloud Cost Handbook - Public Cloud Hosting Cost Guide /
• Web Dev for Beginners - Web Dev Course
• ⁠Packet.School - Interactive Networking Learning
• Awesome Network Analysis - Network Analysis Learning
• Aquent Gymnasium or CodeAnalogies - Web Dev Tutorials
• Dash - Web Dev Courses
• Web Skills, Codeguage, web.dev or Encodedna - Web Dev Guides
• Codevolution - Web Dev Video Lessons
• ⁠The Copenhagen Book - Web App Auth Guidelines
• DOM Events - Learn about DOM Events
• WebRTCForTheCurious - WebRTC Guide /
• backendlore or Design Pattern for Humans - Backend Coding Guides
• backend-challenges - Backend Challenges for Practice
• Backend Cheats - Backend Cheatsheet / Guide
• STPG - Startpage Creation Guides /
• Web Design in 4 Minutes or Strml - Interactive Web Design Tutorial
• WebGL and GLSL Workshop - Interactive WebGL / GLSL Tutorial
• HEAD - HTML head Element Guide
• 100DayCSS, CSS Challenges or PlayCSS - CSS Challenges
• ⁠modern.css - Modern CSS Snippet Comparisons
• Codepip, Grid Garden, CSS Battle, CSS Speedrun, CodingFantasy or CSS Diner - CSS Learning Games
• Guess CSS - CSS Guessing Game
• Flexbox Froggy, Flexbox Zombies, FlexboxDefense or KnightsoftheFlexboxTable - CSS Flexbox Learning Games
• DefensiveCSS - CSS Tips
• LearnCSSGrid or GridByExample - CSS Grid Guides
• You Don't Know JS or EloquentJavaScript - JavaScript Learning Books
• JavaScript Questions or JavaScriptQuiz - JavaScript Questions for Practice
• 33 JS Concepts - Useful JavaScript Concepts
• You-Dont-Need-jQuery - JavaScript Query Style Events Guide
• Untrusted - JavaScript Learning Game
• HTMLDog - HTML/CSS and JavaScript Tutorials
• Sindresorhus Guides - Linux Guides for Node.js Developers
• Pixactly - Test Pixel Dimension Orientation

Computer Science

• CompSciLib - Computer Science Tools
• TeachYourselfComputerScience - Computer Science Book Recommendations
• ⁠The Borr Project / or OSSU Comp Sci / PT-BR / CN / - Computer Science Roadmap
• ⁠CEMC - Computer Science Courses
• CS50 - Harvard Computer Science Course / / / /
• NandGame - Computer Building Puzzle
• CraftingInterpreters - Scripting Language Implementation Book /
• ⁠CSRankings - Publication Activity of Computer Science Colleges per Topic
• CS1000 - Computer Science / Software Engineering
• Tech Dev Guide - Computer Science Google Courses
• Big-O Cheatsheet - Computer Science Complexities Cheatsheet
• CSDIY, awesome-low-level-design, awesome-system-design-resources or LearnAIFromScratch - Computer Science Learning Guides
• ProfessorMesser - IT Courses
• Code.org - Computer Science Courses
• cs-video-courses - Computer Science Courses
• Modern Computer Science Curriculum - Computer Science Courses
• ⁠SEE - Computer Science Courses
• CollegeCompendium - Computer Science Courses
• Missing Semester - MIT Computing Skills Course /
• Gwern.net - Gwern Branwen Essays (AI, Psychology, & Statistics)
• Runestone Interactive - Interactive Guides
• Computerphile or CSDojo - Computer Science YouTube Channels
• ApressOpen - Computer Science Books
• Papers We Love - Computer Science Research Papers
• ⁠System Design Academy - Large Scale System Design Learning
• CS Academy - Interactive Computer Science Lessons
• From Nand To Tetris - Computer Building Lesson
• Copetti - In-depth Console Architecture Analysis /
• ⁠Lean - Theorem Prover and Programming Language / Learning Games / Web /
• Rocq - Theorem Prover and Proof Assistant /
• HOL - Theorem Prover for Higher-Order Logic /
• Web Browser Engineering - Learn about Browser Engineering
• OSDev Wiki - Operating System Dev Wiki
• Wi is Fi - Wi-Fi Educational Guide
• CPU Land - What Happens when you run Programs
• Computer Science Lecture Links
• Eylenburg - Hardware / Software Comparisons + History

Data Science

• Awesome Data Science - Data Science Resources
• ⁠Awesome Data Analysis - Data Analysis Resources
• Data Engineer Handbook - Data Engineer Resources
• OSSU Data Science - Data Science Roadmap /
• Mage - Data Science Pipelines
• Deepnote - Data Science Notebook
• Visualization.info or ⁠Data Visualization Guide - Learn About Data Visualization
• 365Datascience - Data Science Courses
• ⁠Kaggle Learn - Data Science Learning
• Data Science Intro Guide or Data Science First Intro - Data Science with Python Intro Guides
• Advanced R - R Guide / Solutions
• R Packages - R Packages Guide
• R for Data Science - R Data Science Guide
• ggplot2: Elegant Graphics for Data Analysis - ggplot2 Guide
• Scipy Lectures or Virgilio / - Learn DataScience
• Data Engineering Zoomcamp - Data Engineering Course
• Data Engineering Practice Problems - Data Engineering Practice
• Zasper - Data Science IDE

Data Structures

• Leetcode - Coding Practice
• Leetcode Tools - Solutions, 2, 3, 4 / Company Questions / Animations / Anki Cards / Videos, 2 / Resources / Analytics
• NeetCode - Coding Interview Practice
• Codility - Coding Practice
• ProjectLearn - Coding Practice
• LintCode or CodeWars - Coding Practice
• Coding Questions or Skilled.dev - Coding Interview Questions
• DevPost, HackTheEarth, EMKC, AtCoder or Toph.co - Hackathon / Challenge Communities
• Rosetta Code, CodeAbbey, Kattis or Coding Problems - Coding Problems / Solutions
• Exercism, HackerRank or CS Circles - Programming Lessons
• Hello Algo - Data Structures and Algorithms Course
• Algorithms Books - MIT Algorithm Focused Books
• algorithms - Code Algorithms & Data Structures Tutorials
• JavaScript Algorithms - Algorithms and Data Structures in JavaScript
• VisuAlgo or Data Structure Visualizations - Data Structure & Algorithm Visualizations
• Algorithm Visualizer, ⁠Staying or Sorting Algorithms Visualizer / - Visualize Code Algorithms
• CSES Problemset - Collection of Algorithmic Programming Problems
• Memory Spy - Learn how Bytes Represent Variables

UI / UX

• design.tips or Utopia - Design Tips
• HackDesign or Sky Design - UI / Webdesign Courses
• Can't Unsee - UI Design Test
• UXTools or UXMovement - Learn UX Design
• SitePoint - UX Design Courses & Books
• delightful humane design - Humane Design Resources
• Laws of UX - Maxims / Principles for UI Designers
• Deceptive Patterns - Deceptive User Experience Examples
• UI Coach - UI Design Challenge Generator
• BFE.dev - Learn Frontend Development / Interactive
• HTML Dog - Frontend Tutorials & Examples
• FrontEndMentor - Frontend Design Challenges
• Frontend Learning Kit - Frontend Learning Index
• Frontend Bootcamp - Frontend Workshop

Cybersecurity

• Free Cyber Resources, BlueTeam Tools or Applied Cybersecurity - Cybersecurity Learning Resources
• Awesome Infosec - Infosec Learning Resources
• Official Cybersecurity YouTube Channels
• CTF Sites, echoCTF.RED, CTF101, CTF Beginners Guide, CTFtime or CTFLearn - CTF Resources / Guides
• Awesome Sites to Test On - Cybersecurity Practice Sites
• HackTricks - Practical Penetration Testing & Security Auditing Tips
• PortSwigger Academy - Web Security Learning
• OWASP Cheatsheet - Application Security Guide
• Hackers101, SmashTheStack or WebHacking - Cybersecurity Challenges
• Skills for All or 90DaysOfCyberSecurity - Cybersecurity Courses
• ⁠Cybersecurity Mastery Roadmap - Cybersecurity Learning Roadmap
• TryHackMe, ⁠Root Me / , HackTheBox or OpenSecurityTraining2 - Cybersecurity Lessons / Learning
• Addielamarr or Cyber Talent Kids - Learn About Cybersecurity
• ⁠Cyber Intel Handbook - OSINT & Threat Intelligence Guide
• pwn.college - Cybersecurity Practice
• ⁠WeChall - Cybersecurity Practice Games + Rankings
• ⁠BreachLab - Learn Offensive Security
• OverTheWire - Cybersecurity Learning Game
• Hacksplaining - Developer Security Lessons
• ⁠Software Sandboxing - Software Sandboxing Guide
• x86re or Reverse-Engineering - Reverse Engineering Guides
• CrackMyApp / or crackmes / - Reverse Engineering Challenges
• ⁠Reverse Engineering Academy - Interactive Reverse Engineering Lessons
• ⁠Nightmare - Binary Exploitation Defense / Reverse Engineering Course
• John Hammond - Cybersecurity YouTube Tutorials
• Pentesting Bible or Juice Shop - Learn Pentesting
• How DNS Works - Learn DNS
• How DNSSEC Works - Learn DNSSEC
• CryptoPals, Overview of Cryptography or cryptohack - Cryptography Learning
• ⁠CrypTool - Interactive Cryptology Learning / Puzzles
• How HTTPS Works - Learn HTTPS

Game Development

• Awesome-Gamedev, Learn Gamedev, MagicTools, Newgrounds Wiki: Game Dev Resources or The VG Resource - Learning Resources
• ️ Game Dev Tools
• Brackeys - Game Dev Tutorials
• r/gamedev - Reddit Community /
• ⁠20 Games Challenge - Beginner Game Dev Challenges
• CodeWisp - Interactive Beginner Game Dev Learning
• ⁠GameDev - Game Dev Learning / Community /
• Amit’s Game Programming - Game Programming Guide
• GameProgramBooks - Game Programming Books
• PICO-8 - Basic Game Dev Concepts / Web Version
• From Zero To Hero - 2D Game Dev Book
• Web Game Dev - Game Dev Guides /
• SebastianLague - Game Dev Tutorials
• ⁠Vulkan Guide - Vulkan Learning Guide
• Level Design Book - Level Design Guide / Book
• Trig for Games - Trigonometry Lessons for Games
• Shadertoy - Real-Time Shader Dev Platform
• Game Math - Mathematics Lessons for Game Devs
• The Book of Shaders - Fragment Shaders Guide
• EmuDev - Emulator Development Information /
• ⁠EmuDevs - NES Emulator Development Learning Game
• QB64SourceCode - QB64 Game Programming Tutorials
• 8bitWorkshop - Retro Game Programming Tutorials

AI / ML Learning

• Everything AI/ML - LLM Learning Resources /
• ️ Machine Learning Resources
• Awesome Free AI Books, AI-For-Beginners, mlsysbook, udlbook / , ML Engineering, Beginner Guides or HF Learn - Machine Learning Books / Guides
• LLM Course, DeepLearningWizard, IAILab, Handson ML3 or ⁠Anthropic Courses - Machine Learning Courses
• Deep Learning Drizzle - Machine Learning Courses on YouTube
• Machine Learning Roadmap - Machine Learning Roadmap / Guide
• ⁠ML For Beginners - Machine Learning Beginner Lessons
• ⁠aman.ai - Artificial Intelligence / Deep Learning Stanford Notes
• Awesome Generative AI Guide - LLM Research Resources / Guide
• LLM Visualization, KO MicroGPT / or ⁠Transformer Explainer - Transformer and LLM Visualizations
• ML Visualized - Machine Learning Visualizations /
• Deep ML - Solve Machine Learning Problems
• Wolfram Cloud - Computational Intelligence

Exam Prep

• IBResources - International Baccalaureate Resources
• ⁠AP FRQ Archive or CrackAP - Practice AP Exams
• FreeOnlineTest, Examveda, SaveMyExams, Aglasem, MajorTests, ⁠ExamsNet or Alloprof - Exam Practice Tests
• IndiaBIX - Aptitude Tests
• Science Career General - PhD / STEM Career Study Guides
• DoubtNut - Exam / Solutions / Help / Ad-Bypass
• Papers.Xtreme - Test Revision Notes & Answers
• AllFreeDumps or ⁠PDF Tube - Exam Papers / Study
• ⁠Mojza - Exam Study Notes
• ⁠Get Sum Math - GED Prep / Practice
• CaieFinder - Previous Cambridge Test Answers
• Exam Downloader - Exam Download Tool
• ITExams - IT Exam Collection
• Pearson's AP Universe - AP Exam Guides / Community /
• r/APStudents Course Survey - AP Exam Comparison Spreadsheet
• r/CATpreparation - CAT Test Prep /
• Revisely - GCSE Exam Help
• ⁠free-clep-prep or ModernStates - Free CLEP / DSST Exam Prep
• nzqa.toasting - Download NZQA Past Papers
• CatchaScience, IGCSEResources, r/IGCSE or ZNotes - IGCSE Study Notes / Resources
• IGCSE Papers, ⁠exam-mate, ⁠Study Hatch, RevisionScience or Physics & Maths Tutor - Download Past GCSE / IGCSE Papers
• ⁠ISC.exe - Indian School Certificate Examinations (ISC) Resources / Study Material
• Holy Grail - Singaporean Exam Study Notes / Papers
• anthropology - UPSC Telegram Channel

SAT Testing

• Digital SAT Resources - SAT Resources
• SAT Slayer, 2 - SAT Practice Exams / Questions
• ⁠Mcelroy Tutoring - SAT Practice Exams / Questions
• ⁠Sat DB - SAT Practice Exams / Questions / Requires Sign-Up
• DSATuz - SAT Practice Exams / Questions /
• The SAT: Practice Tests - SAT Practice Exams / Questions
• 1600.lol - SAT Practice Exams / Questions
• ⁠Bluebooky - SAT Practice Exams / Questions / Signup Required
• SATArchive - Previous SAT Test Archive
• SAT Reading - Suggested SAT Reading

India Exam Prep

• r/JEENEETards Index - Guides / Study Material
• PhysicsWallah, Pirate Wallah or StudyShark - Exam Prep / YouTube
• PirateHive - Guides / Study Material
• ExamSide - PYQ Solutions
• JEE Hub - JEE / NEET PYQs
• JEE Books - JEE Books Archives
• Genetry or Lec.Branch - JEE Lectures
• YouTube Lengths, Fastlane Lengths or Normal Lane Lengths - Lecture Lengths / Data
• MarksAPP - Guides / Study Material /
• DoubtNut - Solutions / Help / Ad-Bypass

Educational Tools

• nanoHUB - Nanotechnology Tools
• ️ Note-Taking Tools
• ️ Whiteboards / Handwritten Notes
• ️ Presentation / Slideshare Tools
• ️ Data Visualization
• ️ Grammar / Spell Check
• FreeForStudent, ⁠StudentBeans or ⁠Student Offers - Free Student Deals / Discounts
• Temp .edu Mail - Temp .edu Email Addresses
• Edu VPN - Institute Access VPN
• BachelorStudies - Bachelor Degree Search
• Niche, TheUniGuide, Alumnius or Top Universities - University / School Comparisons
• RateMyDorm or :) - College Dorm Reviews
• RateMyProfessor - Professor Ratings
• ExpertFile or ExpertiseFinder - Industry / Academic Expert Search
• ⁠Scholarship Roar - Scholarship Database
• ⁠Extracurriculars.org / , snow.day or Talem - Extracurricular Search
• Wordwall - Lesson Creator
• Internet-In-A-Box - Create Free Offline Learning Hotspots /
• MassiveMark - Convert LLM Chats to DOCX /

Study Tools

• StudyLion - Study Tracker / Productivity Discord Bot / /
• StudyKit / , Studocu / Downloader, Knowt, Quizlet / Show Hidden, Shmoop, Bitesize or SparkNotes - Quizzes / Study Material
• OpenSyllabus - Syllabus Search / Info
• Coursicle - Class Schedule Tracker /
• ⁠Helium - Class Schedule Tracker / Grade Tracker / Planner / /
• Driftly - Class Attendance Tracker /
• Graded - Grades Tracker /
• GradesCalculator - Calculate CGPA & GPA
• ⁠StudyKit - Online Study Tools
• ⁠Schoolhouse - Free Online Tutoring
• MammothMemory - Visual Memory-Based Solutions
• Cheatography - Educational Cheat Sheets
• GradesFixer - Essay Samples
• LearnedEasy - Create Summaries / Quizzes from Books
• ⁠Free Numerade Videos - Homework Help Videos
• Brainly - Homework Help Bots / Communities / Limit Bypass
• StudyStream or ⁠Yeolpumta - Online Study Groups
• ⁠Study Together - Study / Productivity Focused Server
• ⁠Studyn - Discord Bot w/ Study Tracking, Stats, Anki Integration and more
• Space Finder - UK Study Space Search
• ⁠Modern Classroom - Google Classroom Enhancement Extension
• Better Canvas - Canvas Enhancement Extension

Research Tools

• Awesome Research, Scolary or KausalFlow - Research Tool Indexes
• ️ Documents / Articles / Academic Papers
• ️ Research Paper Chatbots
• Zotero, Mendeley / Data / Reference Manager or ⁠JabRef / - Research Managers
• Wolfram Alpha or Wolfram Mobile - Searchable Knowledge Base
• Refseek or Merlot - Academic Search Engines
• ⁠Paper Trails or ResearchRabbit - Academic Article / Paper Trackers
• Lurnby - Research Highlighting Tool /
• Co-STORM - Generate Scientific Articles
• OpenRefine - Data Cleaning
• Foam - Knowledge Management System
• Scrible - Research / Writing Platform
• CATMA - Research Markup & Analysis Tool
• GROBID - Extract / Organize Scientific Document Info
• General Index - Article Metadata Mining Project
• Papertag - Attach Digital Content to Paper
• Taguette - Data Analysis Document Tagging
• Inciteful - Find Connected Literature via Citations
• Publish or Perish - Citation Analyzer
• MyBib, CiteMaker, Formatically, ZoteroBib, CitationMachine, ⁠BibGuru, Scribbr, CiteFast or Cite This For Me - Citation Generators / Chrome
• PlagiarismDetector or Duplichecker - Plagiarism Checkers

Flashcards

• Anki - Flashcard App / / /
• Anki Tools - Add-ons / Decks / Resources, 2
• Anki Android or AnkiWeb (iOS) - Anki Mobile Apps /
• StudyCraft - Flashcard App /
• StudyLib - Online Flashcards
• Flippity - Online Flashcards
• revisiondojo - Online Flashcards
• Flashka - Online Flashcards
• NoteKnight - Online Flashcards
• RemNote - Flashcard App
• Flashcard Machine - Flashcard App
• Gizmo - Flashcard App
• SearchifyX - Search Flashcards

Calculators

• WolframAlpha - Calculators
• Omni Calculator - Calculators
• OpenCalc, NerdCalci, yetCalc or microMathematics - Android Calculators
• GeoGebra or Desmos - Graphing Calculators
• Rink, Converter Pro, ⁠OnlineConversion, Frink or ConvertAll - Unit Converters / Calculators
• CEmu or TI 84 Calculator - TI-84 Calculators
• ⁠CalcPlex - Graphing Calculator Guides
• TICalc - TI Graphing Calculator Files
• arTIfiCE - TI CE Calculator Jailbreak
• numbr.dev - Calculators
• Aqua Calc - Calculators
• PlanetCalc - Calculators
• vCalc - Calculators
• MatrixCalc - Matrix Calculator
• Qalculate - Desktop Calculator
• QwikTape - Note Style Calculator
• Kalker, ⁠SpeedCrunch, Learnbin Lab or Numbat - Scientific Calculators
• ⁠Numla / or Math Notepad - Live Calculative Notepads
• PhotoMath (search), Mathway, MathDF, Tiger Algebra, ⁠Maxima or Symbolab - Math / Algebra Problem Solvers

Dictionaries / Thesaurus

• OneLook - Multi-Source Dictionary / Thesaurus Search
• Wiktionary - Multi-Language Dictionary / Thesaurus / Etymology
• Merriam-Webster - Dictionary / Thesaurus / Etymology
• GoldenDict / 2 - Dictionary /
• NGrams or Netspeak - Word Usage Trackers
• The Piracy Glossary - Piracy Dictionary
• UrbanDictionary or Slangit - Slang Word / Phrase Dictionaries
• ⁠Lexicoff - Offline Dictionary
• Wordnik - Dictionary
• Oxford English Dictionary - Dictionary / Bypass
• Cambridge Dictionary - Dictionary
• Ozdic - Multi-Dictionary / Thesaurus
• Collins Dictionary - Dictionary / Thesaurus
• PowerThesaurus - Thesaurus
• Moby Thesaurus - Thesaurus
• Historical Thesaurus of English - Historical Thesaurus
• ⁠Congeegator (offline) or Verbix - Verb Conjugators
• Phrases.org - Phrase Dictionary
• Time Traveler - Find Words First Printed Usage
• EtymOnline - Etymologies
• StarlingDB - Advanced Linguistics Dictionary
• Phrontistery - Obscure Word Dictionary
• Lexipedia or VisuWords - Word Connections / Visualizers
• Eunoia - Words with No Translation
• Affixes.org - Affixes
• Fraze.it - Sentence Search
• Feeels - Emotion Synonym Chart
• TheDevilsDictionary - Cynical Dictionary
• WordSafety - Swear Word Indexes
• PyGlossary or DSL Converter - Convert Dictionary Files

Encyclopedias

• List of Encyclopedias - Online Encyclopedia Index
• Wikipedia - Encyclopedia / Content List
• Wolfram Alpha - Searchable Knowledgebase
• Omniglot - Writing Systems & Languages Encyclopedia
• Simple Wiki - Simplified Wikipedia
• namuwiki - Korean Encyclopedia
• ⁠Encyclopedia 2000 - 2000s-Style Desktop Encyclopedia /
• Britannica
• EverybodyWiki
• Encyclopedia
• New World Encyclopedia
• Citizendium
• Wikitia
• Infoplease
• Refdesk
• HandWiki

Wikipedia Tools

• Wiki Portals - Wiki Portals Navigation
• HatNote - Top Pages
• Reversepedia - Page Connections Search
• ⁠Wikigraph - Page Connections Visualizer
• wik - Wiki TUI
• CDPedia - Offline View
• Substance - Extract Markdown
• URL Shortener - Shorten URLs
• WikiNearby - Location Search
• ⁠Cite Unseen - Adds Reliability Symbols to Sources / Account Required
• EntiTree - WikiData Visualization Tool /
• Wiki Timeline - Create Timelines from Wiki Articles
• The ⁠Museum of All Things / or ⁠The Endless Museum- 3D Virtual Wikipedia Museums