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Educational
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Documentaries
🌐 Official YT Documentary Channels - YouTube Documentary Channels
⭐ DocumentaryArea / Remove Watermark, Chrome (or use PIP)
⭐ 1337x Documentaries / Torrent
YT Video Essay Hall of Fame - YouTube Video Essay Archive
Courses
Streaming
🌐 Limnology - Educational YouTube Channels
⭐ edX - Courses / Downloader
⭐ MitOpenCourseWare - Courses
⭐ Khan Academy - Courses / Downloader
⭐ Class Central - Search for Courses
Course CSE - Multi-Site Course Search
Educational Hub - Courses
Git.ir - Courses
OpenLearn - Courses
Alison - Courses
Saylor Academy - Courses
EbookFoundation Courses - Courses
OpenCulture - Courses
DigitalGarage - Google Courses
OpenHPI - Courses
OLI - Courses
LearnOutLoud - Documentaries / Courses
Video Lectures - Lectures
Yale Courses - Lectures / YouTube
Gresham College - Lectures / YouTube
Crash Course - Topic Crash Courses
Downloading
Note - Use redirect bypassers to skip annoying link shorteners.
🌐 Free-Courses-For-Everyone - Course Site Index
⭐ TutFlix - Courses / Drives / Sign-Up Opens Fridays
⭐ HackNation - Courses
⭐ tut4dl - Courses / Request Guide
⭐ Course Busters - Course Busters Access
FreeCourseSite, 2 or Docspedia - Torrenting Sites / Use VPN
technet24 - Courses
AfraTafreeh - Courses
learningDL - Courses / Requires Leech
LinkedIn_Learning - LinkedIn Courses
CertCommunity - IT Cert Courses
Learning Sites
🌐 Learn Anything - Learning Resource Search / Free Method / Discord / GitHub
🌐 Wakelet - Learning Resources
🌐 OpenCulture - Learning Resources
🌐 The Free Learning List - Learning Resources
🌐 Awesome Educational Games - Educational Games Index
↪️ Ebook Sites
⭐ PhET, Project Lumen, Cognito or Academo - Interactive Lessons
⭐ r/coolguides or coolguid.es - Guides & Tutorials
⭐ 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
Ted Talks - Inspiring and Educational Talks
Stack Exchange or Quetre - Q&A Communities
Explorabl.es, MinuteLabs, Wikiversity or Learnamic - Quizzes / Guides / Games
ISODN - International Science Olympiads Discord Community
Learn About or Learning Coach - Google's Educational Search AIs
AnimaGraffs - Animated Infographs
Memory Toys, Dual N-Back or BrainScale - Memory Tests / Training
Information Is Beautiful or HalcyonMaps - Data / Information / Infographics / Visualizations
HowStuffWorks or CoolMindMaps - Learn How Things Work
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
Alchemy Forums - Alchemy Forum
P2PU - Join Learning Groups Using Free Courses
Skills / Hobbies / DIY
🌐 Awesome Lego - Lego Resources
⭐ Knots 3D, Animated Knots or NetKnots - Learn to Tie Knots
Make it Yourself, Instructables or CreativePark - DIY Projects / Crafts
Low Tech Magazine - Sustainable DIY Tech Guides
cholyknight - Free Sewing Patterns for Plushies / Wearables
Toys from Trash - Use Everyday Items to Make Toys
ARRL - Amateur Radio Resources / Learning / Exam Search / Question Pools
Mecabricks Workshop or BrickLink Studio - Virtual Lego Building
Brickset - Lego Set Guide
Rebrickable - Lego Collection Manager / Build Ideas
Ian's Shoelace Site - Learn to Tie Shoelaces
Perry Morse, Morse Typing Trainer or ICWO - Learn / Practice Morse Code
Lock Picking 101 - Lock Picking Forum
LibraryOfJuggling - Juggling Technique Database
diyhpluswiki - DIY Biohacking
BeatBlackjack - Learn Blackjack Card Counting
Excel Practice Online - Excel Practice / Guides
ActivistHandbook - Campaigning / Activism Guides
Bridge Command - Bridge Command Ship Simulator
HypnosisChatBooks - Hypnosis / Telegram
PaperToys - Printable Paper Toys
Fold N Fly - Paper Airplane Guides
AXM Paper Space Scale Models - Spacecraft Paper Models
Erowid - Psychoactive Information
PsychonautWiki - Psychonautics Wiki
Shroomery - Magic Mushroom Forum
History
↪️ Historical Maps - Map Resources
↪️ WW2 Links - Educational WW2 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 or RareHistoricalPhotos - Historical Photos / Documents
Museo - Museum Search
Wonderous - Learn About Ancient Structures
Shorpy - Historical Photos
EyewitnesstoHistory - Historical Eyewitness Testimonies
HMDB - Historical Marker Database
ManuscriptMiniatures - Medieval Manuscript Images
BlackPast - African History Encyclopedia
Athena - Greek History Encyclopedia
Theoi - Greek Mythology
Germanic Mythology - Germanic Mythology
Inuit Myths - Inuit Mythology
Mission US - American History Learning Games
OnThisDay - What Happened on Specific Days
Royal Constellations - Royal Family Ancestral Visualization
Historical Tech Tree or Calculating Empires - Historical Discovery / Tech Timelines
ETHW - Engineering and Technology History Wiki
Royal Armouries Collections - Ancient Armaments Museum
NuclearWeaponArchive - Nuclear Weapons History
911 Realtime - 9/11 in Real-Time
The Food Timeline - Food History Timeline
Historical Recipes - Historical Recipes Site Index
Arachne - Ancient Sculpture Image Archive
SmartHistory - Art / Cultural Object History
gwulo - Historical Hong Kong Photo Archive
CARI or CARI Are.na - Design Aesthetics History
ChinesePosters - Chinese Propaganda Poster History
Historical Fashion - Historical Fashion Resources / History
PessimistsArchive - Historical Technological Pessimism Archive
Time Portal - History Clip Guessing
Mythology / Folklore
ABookOfCreatures, Demons of the Deep or Bestiary - Mythological Encyclopedias
GodChecker - Religion / Mythology History
ObscUrban Legend Wiki - Mythology / Urban Legends
Encyclopedia Mythica - Mythology / Folklore / Religion
Mythology.net - Mythology / Religion
Japanese Mythology or Yokai - Japanese Mythology / Folklore
Philosophy
⭐ Stanford Encyclopedia of Philosophy, IEP or nLab Philosophy - Philosophy Encyclopedias / Search
Philosophy Bro, LibreTexts Philosophy, Reasoned, TheDailyIdea or PhilosophyBasics - Philosophy Resources / Learning
Wireless Philosophy - Philosophy Videos
1000-Word Philosophy - 1000-Word Essays on Philosophical Topics
Untools - Better Thinking Tools
Brainkit - Learn Helpful Principles
Art of Manliness - Develop Life Skills
VisualizeValue - Life Lesson Visualizations
Sketchplanations - Explanation Sketches
IEoP, YouLogicalFallacyIs, FallacyFiles or LogicalFallacies - Learn about Logical Fallacies
YourBias.is - Learn about Biases
Kialo - Debates / Discussion
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
Music
🌐 Awesome Music Theory - Music Theory Resources
⭐ Muted, Open Music Theory / 2, Chromatone, Teoria, SimplifyingTheory, LightNote or Music Theory - Music Theory
LibreTexts Music - Music Learning
MusicKit, Tuner or Tone Generator - Metronome, Tuner & Tone Generators
Tuner Ninja - Instrument Tuner
Circle of Fifths - Visualize Notes, Cords and Keys
ScoreCloud, ChordReader2 or Chordify - Chord Detection / Transcriber
Arpeggiator, Chordi or AutoChords - Chord Progression Generators
HookTheory - Chord Progression Library
Piano Scribe - Piano Transcriber
LilyPond - Music Engraving Program
Learning Music or Musicca - Music-Making Lessons
Midiano / Discord, Piano Trainer / GitHub, Chord Nebula, sightread or PianoCheetah - Piano Practice / Learning
Keyboard Connect - Keyboard Tutoring App
TrueToneGuitar, Songsterr, 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 Guitarsix - Guitar Lessons
Ultimate Guitar - Guitar Tabs
Chorder - Guitar Chord Finder
Guitar Fretboard, Fretastic or Gitori - Virtual Fretboards / Guitar Lessons
coop3rdrumm3r or FreeDrumLessons - Drum Lessons
911tabs or Finger Tabs - Tabs
Jazz Improvisor - Improvised Jazz
LearningSynths - Synthesizers
Sight Singing Factory - Sight Singing Practice
A-Complete-UTAU-Tutorial-For-Beginners - UTAU Tutorial
PerfectPitch - Pitch Recognition Practice
MusicStaff - Music Teacher Search
ChiffAndFipple - Irish Traditional Music Forum
MIMO - Musical Instrument Database
VGM Sound Sources - VGM Sound Sources / Discord
Art / Editing
🌐 Creator Resources - Art & Animation Resource Index
🌐 AwesomeAnimeResearch - Anime Machine Learning
⭐ Art Study Guide - Art Study Guides / Tips
⭐ Drawabox, Drawing Starter Pack Playlist, FarsiTuts or Bill Martin's Guide to Drawing - 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
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
Reference Angle - Human Photo Reference Search
x6ud - Animal Photo Reference Search
Thomas Romain Perspective - Perspective Guide
Dimensions - Object Dimension Reference
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
AMV101 - Animated Music Video-Making Guides
Geography / Sociology
🌐 Awesome Datasets - Public Datasets
🌐 Country Infographics - Country Infographic Images
↪️ Historical / Modern Maps - Map Resources
⭐ Worldometer, TheScaleOfLife, WorldBank, US Census, DataUSA, Data.gov or UN Data - World Data & Statistics
⭐ Our World in Data - World Problem Database
⭐ The Atlas of Economic Complexity - Global Economic Growth Data
⭐ Soar - Digital Atlas
⭐ Integrity Index - US Political Finance Integrity Database / Subreddit / Discord
⭐ Ekvis / Subreddit / Discord, Seterra, LizardPoint, Worldle, Learn World Map or Teuteuf - Geography Guessing / Quizzes
LibreTexts Social Science - Social Science Learning
LibreTexts Geosciences - Geoscience Learning
Maps.com - Interesting / Educational Maps
AntipodesMap - Find Antipodes
The True Size or True Size of Countries - Compare Country Size
NationsEncyclopedia - Location / Population Data
City Data - US City Data
Data Commons or Engaging Data - Data Visualizations
Global Consciousness Project - Real-Time Global Consciousness Data
GovTrack - US Government Legislation Tracking / Votes
Trans Rights Map - Trans Legal Rights Map / Policy Tracking
OpenSecrets - Government Money Tracking
BLS - U.S. Bureau of Labor Statistics
If It Were My Home, GlobalEdge or MyLifeElsewhere - Country Data Comparisons
WorldPoverty - World Poverty Data
PixelWealth - Wealth Inequality Visualization / Facts / GitHub
Unequal Scenes - Scenes of Inequality Around the World
Dollar Street - Compare Homes by Country / Income
EverySecond - Visualize Per Second Data
OEC or UN Comtrade - Global Trade Data
Statista - Market Statistics
Netblocks - Find Impact of Internet Shutdown on Economy
Rulers.org - World Heads Of State & Government Database
World Births and Deaths - World Birth / Death Rates Visualization
DataUNODC - Drug / Crime Statistics
Gun Violence Archive - Gun Violence Statistics
Incarceration in Real Numbers - Incarceration Visualization / Facts
Expatistan - Cost of Living Calculator
Climate Data or Climate Explorer - Climate Change Data
ExtremeWeatherWatch - Extreme Weather Data / Tracking
En-ROADS - Climate Solutions Simulator
Global Volcanism Program - Volcano Information Database
8000ers - Mountain Visualization & Info
iCivics - U.S. Law Learning Games
WorldLicensePlates - World License Plate Index
Symbols - Symbol Database
Flag Guesser or Flag Match - Flag Quizzes
FlagLog or Flaglookup - Flag Databases
Flag Stories - Flag Design Breakdowns
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
NaturalHistory - 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
Spitfire Panorama - Spitfire Mark IX Cockpit Interactve Panorama
Virtual Vist Tours - Ireland Virtual Tours
Matterport - Explore Real Places Digitally
Basilica Viewer - St. Peter’s Basilica Tour
Smithsonian 3D - Smithsonian 3D Digitization Museum
The Bayeux Tapestry - Bayeux Tapestry 3D Digitization
Science / Math
↪️ Science News
TIB AV-Portal - Science Videos
LabXchange, JavaLab or EduMedia - Interactive Science Simulations
Physics
🌐 Physics Aviary or Falstad - Physics Tools
⭐ The Feynman Lectures - Physics Lectures
⭐ Bartosz Ciechanowski, Isaac Physics, PhysicsClassroom, HyperPhysics, MotionMountain or Splung - Physics Lessons / Learning
⭐ Physics Simulations, Mujoco, Physics Animations, oPhysics or MyPhysicsLab - Physics Simulations / Animations
PhysicsTravelGuide - Physics Explanations
LibreTexts Physics - Physics Learning / Guides
nLab Physics - Physics Encyclopedia
Algodoo - Interactive Physics Tool
QPaths - Learn Basic Quantum Terms
quantum - Quantum Physics Learning App
Physics Forums - Physics / Science Forum
Physics Olympiads - ISODN Physics Discord Community
Unihedron - Electromagnetic Radiation Spectrum Chart
Quantum Web Directory - Science / Tech / Math / Physics
Virtual-Lab - Interactive Quantum Computing Lessons
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 or Sim Flow - Fluid Dynamics Simulators
Bouncy Balls or Balls Simulation - Ball Physics Simulator
WebGL Water - Water Simulation
LAMMPS - Molecular Dynamics (MD) Code
Simuwaerm - Heat Simulator
Math
🌐 Awesome Math or Math Resources - Math Resources
🌐 Math and Science Lectures - Index of Math + Science Video Courses
↪️ LaTeX Tools
⭐ Number Academy - Encyclopedia of Numbers
⭐ Wumbo - Math Reference Site
⭐ Open Source Society University / PT-BR - Math Roadmap / Discord
⭐ AoPS Alcumus or MathDash - Adaptive Problem Solving
⭐ BetterExplained - Math Guides / Courses
⭐ Manim, 2 - Generate Explanatory Math Videos / Videos / Difference Between Versions
⭐ WolframAlpha - Searchable Knowledge Base / Mobile (search)
Wolfram MathWorld or nLab Math - Mathematics Encyclopedias
Immortal's Maths Problems, Evan Chen, Pauls Online Math Notes or LibreTexts Math - Math Practice / Guides
Red Blob Games or Mathspad - Interactive Math Sites
Matthen - Math Animations
Math Discord - Math Help / Community Discord
Mathcha, Corca or Math Editor - Online Math Editors
SequenceDB - Sequence Machine
OEIS - Encyclopedia of Integer Sequences
ProofWiki - Mathematical Proofs Encyclopedia
Giac/Xcas - Algebra System
Algebra Rules - Learn Algebra Rules
CalculusMadeEasy - Learn Calculus
CLP - Calculus Textbooks
Mathematics Roadmap or Learn Mathematics - Mathematics Book Recommendations
Converter Pro, Rink, Frink, OneConverter or ConvertAll - Unit Converters / Calculators
MathJax - JavaScript Math Display
ISciDAVis - Scientific Data Plotter
Approach0 - Math Formula Search
MathOnline or Mathigon - Math / Courses
Professor Leonard, 3Blue1Brown or MisterWootube - YouTube Math Lessons
Mathispower4u, Andy Math, SchoolYourself, mathhelp, MathPortal, MadAsMaths, Math Planet or CoolMath - Math Lessons / Practice
CoolMathGames - Math Games
Cut The Knot - Math Equations / Problems
IXL Learning - Math Practice / Quizzes
HSCMathsByTopic - HSC Math Practice
ParkMath or FreeMathHelp - Math Guides
ISODN Math - ISODN Math Discord Community
Fourier Transform - Interactive Fourier Transform Guide
Terence Tao Research - Mathematical Research
OpenLogicProject - Math Logic Teaching Materials
Math is Fun - Math Tutorials / Puzzles / Games
Brainstellar Puzzles - Puzzles from Quant Interviews
Project Euler - Math / Programming Problems
LibreTexts Statistic - Statistic Practice / Guides
IMS - Introduction to Modern Statistics
Seeing Theory or Stat Trek - Statistics & Probability Tutorials
Engineering
🌐 The Engineering Toolbox or EngineersEdge - Engineering Resources
🌐 r/EngineeringStudents Resources - Engineering Student Resources
🌐 Awesome Mecheng - Mechanical Engineering Resources
🌐 Awesome Electronics - Electronic Engineering Resources
🌐 Engineering Blogs - Engineering Blogs
↪️ 3D Modeling / CAD Apps
⭐ r/AskEngineers / Wiki, r/engineering or r/AutomotiveEngineering - Engineering Subreddits
⭐ KiCad / Libraries or Horizon EDA - Schematics Editor / PCB Creator / SPICE Integration
Formulia - Engineering Formulas / Tools
Sanfoundry - Engineering Questions & Answers
LibreTexts Engineering - Engineering Learning / Guides
CESDB - Engineering Software
Animated Engines - Engine Animations / Explanations
507 Movements - Mechanical Movement Animations
Robot Shop - Robotics Forum
VisRo Robotics / Discord or VittaScience - Robotics Learning
Humanoid Robots Wiki - Robotics Courses Index
Cyberbotics - Robot Simulator
Diode - 3D Hardware Simulator
Wokwi - Arduino / ESP32 Board Simulators
HDLBits - Learn Circuit Design
The Pinouts Book - Pinout Function Reference Guide
Circuit Steps - Circuit Analysis Tool
BatteryUniversity - Learn About Batteries
Electronics Tutorials or Instrumentacion - Electronic Guides
Hacker Fab - Semiconductor Documentation / Research
/m/engineering - Engineering Multireddit
McMaster or 3D Find It - Free 3D Printable Hardware Parts + Tools
Build List - On-Demand Online Manufacturers
Aerospace Engineering
🌐 Awesome Aerospace Engineering - Aerospace Engineering Learning Resources
🌐 Awesome Flying FPV - Remote Copter / Plane Resources
r/AerospaceEngineering - Aerospace Engineering Community
AerospaceWeb - Aerospace Info Database / Calculators / Q&A
The Rocketry Forum - Rocketry Forums / Community
r/rocketry - Rocketry Community / Discord
Nakka Rocketry - Rocket Technical Archive
Half Cat Rocketry - Liquid Rocket Motor Guide / Info / Resources / X / Discord / GitHub
OpenRocket - Rocket Simulator / Wiki / Discord / GitHub
RocketReviews - Rocket Reviews / Test Results
ThrustCurve - Rocket Motor Performance Database / GitHub
MIT Rocket Team - Official MIT Rocket Team Wiki / Resources Wikipedia
Jacobs Rocketry - Rocketry Info / Manuals
Tripoli Rocketry or NAR / Facebook - High-Powered Rocket Resources / Info
Hot Nozzle Society - High-Power Rocketry Guide / Community / X / Discord
openMotor - Internal Ballistics Simulator
AirVectors or PlaneSpotters - Aircraft Indexes / Images
Flight Mechanics - Aircraft Flight Mechanics Learning
Av8n - Aviation Physics Textbook
SmartCockpit - Aircraft Systems / Technical Manuals
Boeing 737 Technical Site - B737 Technical Engineering Guides / History / YouTube
Outerzone - Vintage Model Airplane Plans
Airfoil Tools - Airfoil Coordinates / Dat Files
OscarLiang.com - FPV Drone Tutorials / Reviews
OpenDroneMap - Drone Mapping Software
Langostino - Decentralized AI Drone Pilot Platform / Learning / X / Discord
Stolen Drone - Stolen Drone Info
Chemistry
🌐 Wolfram Alpha Chemistry - Chemistry Calculators / Tools
⭐ 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, NIST or EssentialChemicalIndustry - Chemistry Wikis
ChemistrySteps, Science Geek or DocBrown - Chemistry Practice / Guides
Cliffnotes Chemistry / Organic Chemistry I / Organic Chemistry II, Chem Wiki or chemguide - Study Guides
ReactionFlash / iOS - Chemical Reaction Flashcards
Compound Interest - Chemistry Infographics
ChemistryTalk - Tutorials / Experiments / Elements / Reference Articles
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
Merck Index - Online Merck Index
Organic Chemistry Data - Organic Chemistry Data
IGOC - Illustrated Glossary of Organic Chemistry
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
⭐ Images-of-elements - Element Images
⭐ periodic-table.org or Material Properties - Material / Element Learning Resources
Atom Animation / GitHub, Graph Overflow or 3D Periodic Table - 3D Visualizations of Atoms
Atomic - Periodic Table Mobile App
The Periodic Table Of Elements - Interactive Table
periodic-table.io - Interactive Table
Periodic Table App - Interactive Table
WebElements - Interactive Table
Photographic Periodic Table - Image-Based Periodic Table w/ Physical Examples
Biology
⭐ Wikispecies or The Catalogue of Life - Species Databases
⭐ Animalia or A-Z Animal - Animal Encyclopedia
⭐ OneZoom - Tree of Life Explorer
⭐ Lost and Found Nature - Rediscovered Animal / Plant Database
BiologyOnline - Biology Articles
Science Geek - Biology Study Guides
LibreTexts Biology - Biology Learning / Guides
Biodiversity Heritage Library - Biodiversity Research
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
EuroBirdPortal - European Bird Distribution Map
BirdSounds - Thousands of Bird Sounds Visualized
Featherbase - Bird Feather Database
BugGuide - Insect Identification Community
AntWeb - Ant Species Database
Macroinvertebrates - Freshwater Macroinvertebrates Atlas
Life Under the Ice - View Antarctic Microbes
WhyDoCatsAndDogs...? - Pet Q&A Site
Backyard Chickens - Chicken Raising Forum
DinosaurPictures - Dinosaur Info / Images
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
⭐ Khan Academy - Physiology / Pathology Overviews
⭐ Afratafreeh - Medical Video Courses and Books
⭐ Radiopaedia, Radiology Assistant or Radiology Education - 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
Glass AI - Medical Diagnoses' Training AI
Get Body Smart or University of Michigan Anatomy - Anatomy Guides
Zygote Body, AnatomyLearning or Biodigital - 3D Human Anatomical Models
Inner Body - Anatomy Atlas (2D&3D)
NIH Print - Biomedical Science 3D Models
Sectional Anatomy - Cross Sectional Educational MRI / CT Scans
University of Minnesota Histology or University of Leeds Histology - Histology Guides
Tulane University Pharmacology - Pharmacology Info & Quizzes
Antibiotics Summary, 2 - Antibiotics Summary Image
Healio ECG Review, ECG Library or Litfl - ECG Information
The ECG Course - ECG Video Course
ECG Wave-Maven: Self-Assessment Program - ECG Practice
Hyper Heart - Massey University Heart Animation
Emergency Medicine Cases - EM Case Index
EMCrit - Emergency Medicine Information
DeployedMedicine (signup) or TCCC - Combat Medicine Videos
EMRap - Emergency Medicine Videos
Calgary Guide - Disease Pathophysiology / Manifestation Flow-Charts
MalaCards - Human Disease Database
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
CRAM - Medical Flashcards
Space
⭐ r/Space - Space Subreddit
⭐ Space Dashboard - Space Live Stream Dashboard
⭐ March to the Moon, Apollo Image Atlas or ApolloArchive / Flickr - Moon Landing Images
Interactive Apollo Missions or FirstMenOnTheMoon - Apollo in Realtime
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
Encyclopedia Astronautica - Space Encyclopedia
NASA History or NASA Ebooks - NASA Books
Cosmos2025, Map of the Universe, Scale of the Universe, AndroidCelestia or SpaceEngine - Interactive Universe Scales
NASA's Eyes or Celestia - 3D Space Visualizations / Solar System
ExoplanetExplore - Interactive Exoplanet Visualization
ExoplanetArchive - Exoplanet Database
RGV Aerial Photography - Aerial Photography Community / News / X
TheCMB - 3D Cosmic Microwave Background Model
ISODN Earth Science - ISODN Earth Science Discord Community
Astronomy
🌐 Astronomy Resources - Astronomy Resources
⭐ 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
Planet Globe - Virtual Globes
Sky Calendar - Astronomy Calendar
Nights on Earth - Astronomical Event Calendar
Space Weather News or SpaceWeather - Space Weather Updates / Videos
Earth and Moon Viewer - Earth / Moon Latitude and Longitude Viewer
SDO Dashboard - Live Sun Feed
WikiSky, SkyViewer or 100,000 Stars - Interactive Star Visualizations
CelesTrack - Earth Orbit Visualization
TheSkyLive or Atlas of Space - Solar System Simulators / Information
Space Object Comparison - Compare Sizes Of Celestial Objects
1 Pixel moon, LightYear or OMG SPACE - Solar System Scale Model
Astrogeology - Planetary Maps
AndroidPlanisphere - Android Star Chart
Aladin - Astronomical Image quar fViewer / Lite Version
Siril - Astronomical Image Processor
ESAsky - Public Astronomical Data
Stellarium-Web or Stellarium / GitHub - Virtual Stellariums
WorldwideTelescope - Interactive Telescope Data / Home Page / GitHub
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
ESO Images, NASA2Explore or Astrobin - 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
Spacecraft
⭐ EarthData - Daily Satellite Replays
⭐ Visible Earth, SpaceFromSpace, GOES-16 Satellite Imagery or Sentinel Hub - Satellite Imagery
NASASpaceFlight - Launch Livestreams / News / Forum / X
Next Spaceflight / X / Discord, nextrocket.space or RocketLaunch - Rocket Launch / Space Flight Trackers
Spaceflight Archive - Rocket Launch History / Visualizations / Stats / X
TonyBela Infographics - Spacecraft / Rocket Infographics / X
Ringwatchers - Starship Diagrams / Articles / Community / X / Discord
ISS In Realtime - Historical ISS Mission Replays / Database
ISS Sim - ISS Docking Simulator
Transit Finder, ISS Tracker, Spot The Station or Where The ISS At? - ISS Transit Tracking
Satellite Map, KeepTrack / GitHub, SGP4 / GitHub, KeepTrackSpace, Find Starlink or Look4Sat - Satellite Orbit Maps / Trackers
Spacebook - Evaluates / Tracks Satellite Collision Risks & Maneuvers
Leolabs Space - Low Earth Orbit Simulator
Andegraf Rockets - Rocket Diagrams
Language Learning
Multi-Language
🌐 Language Links, LibreTexts Languages, /int/ Guide or r/LanguageLearning Resources - Language Learning Resources
🌐 Speechling - Language Learning Tools
🌐 LexiLogos or Dictionary Index - Language Dictionary Indexes
🌐 Comprehensible Input Wiki - Learn Languages via Comprehensible Input
⭐ Language Transfer - Language Learning Lectures
⭐ Readlang - Learn a Language via Web Browsing
Language Learners - Language Learning Forum / Community
WordReference, Glosbe or Reverso - Translation Dictionary
ReverseDictionary or OneLook Reverse - Search for Words Using Their Meanings
Languagelearning.site - Language Learning Torrents
Refold - Language Learning Roadmap
Language Drops / Premium (search) or OkyDoky - Language Learning App with Thematic Vocab
Yojik - Language Learning Courses
DLIFLC - Language Learning Quizzes
Ba Ba Dum - Language Learning Game
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 - Language Learning Flashcards
MyLanguages, VocabTest, My Little Word Land or 50Languages - Grammar / Vocabulary Language Learning
Verbix - Verb Conjugator
ListLang - Most Used Words in Any Language
Omniglot - Writing System & Language Encyclopedia
LingYourLanguage or Language Squad - Language Identification Test
IPA Reader - International Phonetic Alphabet Reader
Interactive IPA Chart - Learn Phonetic Alphabet Symbols
LocalLingual or DialectArchive - Listen to Accents
TeachMeHebrew - Learn Hebrew
wehewehe - Hawaiian Dictionary
Itchy Feet Comic - Asian Script Differentiation Guide
Language Exchange
🌐 The Language Exchange Network, 2 - Language Exchange Communities / Discord
ISODN Linguistics - ISODN Linguistics Discord Community
English
🌐 Many Things - ESL Resources
🌐 ESOL - English Learning Resources
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 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
yell0wsuit or OxfordLearnersDictionaries - Word Learning Site
CEFR Lookup - CEFR Word Level Lookup
Podcasts in English - English Learning Podcasts
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 Pitch Accent Resources - Japanese Accent Resources
JapaneseWithAnime or Immersion Kit - Learn Japanese via Anime / Manga
Nihongo con Teppei - Japanese Beginners Podcast
JapaneseTab - Japanese Learning Extension
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
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
🌐 Cantonese Sheik, Refold Mandarin or SinoSplice- Chinese Learning Resources
⭐ r/ChineseLanguage - Chinese Learning Community / Discord
⭐ Zhongwen - Learn via Classic Chinese Literature
Train Chinese, ChineseSkill or HelloChinese - Chinese Learning App
KongLongMandarin, DU Chinese or Dong Chinese - Chinese Lessons
ArchChinese or Hanzi Grids - Chinese Writing Lessons
Stroke Order - Learn Chinese Stroke Orders
HackingChinese - Chinese Learning Articles
Cantonese.ca, CantoScrolls or Laoshi - Chinese Vocabulary
MDBG or zdict or CantoWords - Chinese Dictionaries
Maorma - Chinese Tone Practice
The Chairman's Bao - Chinese Reading Practice / News Articles
Pleco - Chinese Flashcards / Dictionary
Chinese Flashcards - Chinese Flashcards
MandoBot - Mandarin Translation / Segmentation
Cantonese
🌐 Cantonese Sheik - Cantonese Learning Resources
Live Lingua Cantonese - Free Cantonese Courses
EdUHK, OpenCantonese, polyu or eMini_MOOC2k - Cantonese Learning / Practice
Cantonese.ca or CantoScrolls - Cantonese Vocabulary
Beginner's Cantonese - Cantonese Grammar Lesson
CantoWords - Cantonese Dictionary
HKDict - Contemporary Cantonese-English Dictionary
OnlineCantonese - Cantonese Tone Practice
European
🌐 French Comprehensible Input or Refold French - French Comprehensible Input Resources
⭐ StudySpanish or LibreLingo - 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
The People's Dictionary - Swedish Translation Dictionary
German
🌐 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
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
South Asian Languages - South Asian Language Learning
Urdupod101 - Urdu Grammar Overview / Video
Rekhta Dictionary - Urdu Dictionary
UBC Sanskrit Learning Tools - UBC Sanskrit Lessons
Sanskrit Subreddit / Resources - Sanskrit Resources / Discussion
Ambuda - Sanskrit Dictionaries / Texts
Sign Languages
⭐ SpreadTheSign, Sign Dictionary or SL Dictionary - Multi-Language Dictionaries
ASL Dictionary, StrongASL, LifePrint, ASLCore or HandSpeak - American Sign Language Dictionaries
Text to Sign - Convert Text to Fingerspelling in ASL or BSL
Rochester ASL / LSF - ASL / LSF / Click Dictionary
SignFlow - Interactive Sign Dictionary / Learning
Helping Hands - VR-Based Sign Language Practice / Classes / Discord
BSL Dictionary, BSL Signbank, MobileSign or Signd - British Sign Language Dictionaries
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
Interpreter Services - Specialized ASL Dictionary
Sign AIP - Sign-Language Learning Videos
SignSchool - ASL Learning / Dictionary
The ASL Calendar - ASL Community / Resources
SooSL - Create Custom Sign Language Dictionaries
ASL Learning - ASL Learning Site
ASL-LEX - ASL Visual Connections Map / Visualization
DeafVideo - ASL Vlogs + Videos / YouTube Style Site for Deaf Content
Learn NZSL - NZSL Learning Site
HandyBSL - Learn / Practice BSL
SignLearner - Learn ASL or BSL while Browsing Internet / Chromium
Signs - ASL Learning AI
DMDb or Sign on Screen - Deaf Movie Databases / Sign Language Films / Deaf Actors
Game Learning
Rubiks Cube
🌐 Cubing.net - Cubing Tools
🌐 Rubiks Cube Guide - Guide to Rubiks Cube / Resources
⭐ J Perm, CubeSkills, RubiksTrainer or Easiest Solve - Cubing Tutorials / Practice Resources
⭐ 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
Cubing Time Standard - Track Your Performance Across WCA Events
alg.cubing.net, CubeDB, or Tao Yu Trainer - Algorithm Animators / Visualizers
F2L Trainer - Algorithm-Specific Trainers
BlindTrainer - Blindfolded Rubinks Trainer
Hypercubing - Hypercubing Wiki
Speedcube.app - Cubing Timer (Mobile-Friendly)
SolveTheCube - Cubing Timer
qqTimer - Cubing Timer
Chess
🌐 Awesome Chess, Immortal Chess Network, TheChessDirectory or Chess Resources - Chess Resources
🌐 r/Chess Books - Recommended Chess Books
⭐ Scid vs. PC - Learn / Practice Chess
ChessGames - Chess Database / Community
List Study - Chess Lessons
Chessable - Chess Lessons
TheChessWebsite - Learn / Practice Chess
HerculesChess - Learn / Practice Chess
Chess Tempo - Chess Practice
Lucas Chess - Chess Practice
Chess Coach - Chess Coaching App
Chess OCR - Multi-Site Digital Chessboard Analysis
Shâh Kur - Blind Chess Practice / Improve Board Visualization
WintrChess, 2 - Chess Game / Move Analysis
Chess Analysis - Chess Game / Move Analysis / Discord
Pawn Appétit - Chess Game / Move Analysis / GitHub
YottaChess - Chess Game / Move Analysis
Chessigma - Chess Game / Move Analysis / Discord
En Croissant - Chess Game / Move Analysis
Chess Vision - Chess Game / Move Analysis
Tactic or Not - Chess Move Analysis / Practice / Discord
OpeningTree - Download / Visualize Chess Games
Chess Monitor - Track Chess Analytics
2700chess - Live Chess Player Ratings
365Chess - Chess History / Lessons
ChessVariants - 1000+ Chess Variants + Guides
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 or D&D 5e BR / Use Translator - D&D 4E/5E Books
Cruinne's D&D Reading Room - D&D Worldbuilding Checklist
DiceCloud - D&D 5e Character Manager / GitHub
Tetra-cube - Monster Statblock Generator
GM Binder - 5E Homebrew Document Editors
D&D Wiki - D&D Homebrew Wiki
Exam Prep
🌐 IBResources - International Baccalaureate Resources
FreeOnlineTest, CrackAP, Examveda, SaveMyExams, Aglasem, MajorTests or Alloprof - Exam Practice Tests
IndiaBIX - Aptitude Tests
Science Career General - PhD / STEM Career Study Guides
Papers.Xtreme - Test Revision Notes & Answers
AllFreeDumps - Exam Dumps
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 / Discord
CrackAP - Practice AP Exams
r/APStudents Course Survey - AP Exam Comparison Spreadsheet
r/CATpreparation - CAT Test Prep / Discord
Revisely - GCSE Exam Help
free-clep-prep or ModernStates - Free CLEP / DSST Exam Prep
NCERT Books - NCERT Practice Books
nzqa.toasting - Download NZQA Past Papers
CatchaScience, IGCSEResources, r/IGCSE or ZNotes - IGCSE Study Notes / Resources
IGCSE Papers, RevisionScience or Physics & Maths Tutor - Download Past GCSE / IGCSE Papers
anthropology - UPSC Telegram Channel
GaryChamberlainLectureNotes - Econometrics Lecture Notes
SAT Testing
🌐 Digital SAT Resources - SAT Resources
SAT Slayer, 2 - SAT Practice Exams / Questions
Mcelroy Tutoring - SAT Practice Exams / Questions
OnePrep - SAT Practice Exams / Questions
Sat DB - SAT Practice Exams / Questions / Requires Sign-Up
The SAT: Practice Tests - SAT Practice Exams / Questions
SAT Question Bank - SAT Practice Exams / Questions
SATArchive - Previous SAT Test Archive
SAT Reading - Suggested SAT Reading
SAT_Files_discussion - SAT Exam Discussion
JEE / NEET
🌐 r/JEENEETards Index - Guides / Study Material
⭐ PhysicsWallah - JEE Lessons / YouTube
⭐ PirateHive - Guides / Study Material
⭐ ExamSide - PYQ Solutions
JEE Hub - JEE / NEET PYQs
JEE Books or JEEBooksPDF / Telegram - JEE Books Archives
Genetry or Lec.Branch - JEE Lectures
YouTube Lengths, Fastlane Lengths or Normal Lane Lengths - Lecture Lengths / Data