Categories
An interactive timeline lets people explore world history from the origin of the universe to the present.
Runs live or self-paced quizzes and reports topic-level results for classrooms and workplace training.
A vocabulary game for learners to practice Korean words at different difficulty levels.
Tracks satellites and spacecraft around Earth, the Moon, Mars, and the solar system in a 3D browser view.
Helps readers explore philosophical excerpts and replies through connected ideas, authors, works, and themes.
Explore academic genealogy by tracing who taught researchers, whom they taught, and thesis examiners between them.
A browser-based PDF and EPUB reader that answers questions with citations to passages in the book.
Explains expected earthquake impacts and recovery timelines for Lower Mainland residents.
An interactive playground for exploring finite and infinite noble polyhedra in 3D.
Helps macOS users improve typing with brief adaptive drills focused on their weakest keys.
Interactive labs teach data scientists signal-processing concepts using real datasets and graded questions.
Explains the 2026 Nobel Prizes in plain language for different readers and offers scripts for explaining the discoveries.
An interactive 3D visualization of celestial objects built from open space data using HTML and CSS.
Helps developers practice real-world engineering challenges in a browser-based IDE across modern frameworks and tools.
An interactive simulation for exploring how simple rules produce complex behavior.
An interactive 3D museum lets people explore art history, artists, and paintings across time.
An interactive 3D model that teaches learners about human cell structures and their functions.
Helps people practice visa, citizenship, pitch, and job interviews with voice sessions and feedback.
A multiplayer game where friends race to solve the same coding challenge.
Explore historical events, people, and borders on a map for a selected time period.
An AI tutor helps students solve math and physics problems with step-by-step explanations, graphing, and simulations.
Teaches people to program a modular synthesiser through an interactive browser tutorial.
Helps children practise multiplication tables with quizzes, games, charts, and printable worksheets.
Generates curated topics and talking points for conversations, writing, debates, speeches, and speaking practice.
Provides free printable math worksheets with answer keys aligned to state standards for pre-K through grade 8.
Teaches beginners Python through interactive lessons and drawing exercises in a web course and Mac app.
Helps language learners study with podcasts and other media using interactive transcripts, translations, and AI explanations.
Displays the French Republican calendar with daily illustrations and decimal time.
Simulates Goethe and telc B1 speaking exams with AI examiners and partners for German learners.
A news site highlights machine-learning papers from arXiv discussed on Hacker News and summarizes them in plain language.
An interactive textbook teaches learners mathematics from arithmetic through university-level topics.
An interactive periodic table with element data, chemistry tools, quizzes, and printable resources.
Provides critical thinking courses, worksheets, and lesson plans for children and teens at home or school.
A free browser game lets players try classic psychology experiments and compare choices with others.
Helps candidates prepare for interviews with role- and job-specific courses, practice questions, and coaching tools.
Helps teachers organize lesson plans, import timetables, and generate classroom materials with AI.
A web app for practicing Dual N-Back through original modes and simulations of classic protocols.
A macOS menu-bar app that analyzes typing habits and drills the keys that slow users down.
An interactive reference for learning computer architecture through explorable computer components and concepts.
An interactive Greek reading tool that teaches grammar through annotated texts and progressive lessons.
Lets users take quizzes on engineering topics, general knowledge, and popular culture for interview prep or fun.
Aggregates education technology news, newsletters, and research for readers following K - 12, higher education, AI, startups, and policy.
Helps children aged 10 - 14 practice critical thinking by finding and explaining mistakes in AI-generated math solutions.
Turns YouTube channels into structured courses with study tools and progress tracking for learners.
A browser-based 3D map showing the current positions of planets, moons, asteroids, comets, and satellites.
Converts text and binary in a browser, with options for number bases, QR codes, dot-matrix images, and signal tones.
An interactive history lesson that explains the Enigma machine through 3D models and its wartime use.
Provides spoken language practice through role-play sequences for everyday and workplace situations.
Provides professional developers with short lessons and daily quizzes on full-stack fundamentals.
An interactive 3D tool for learning dental anatomy and tooth numbering.
An interactive explainer that shows how time changes for travellers moving at different speeds.
Provides online courses on security, reverse engineering, debugging, and computer architecture.
Helps learners study five languages through short lessons, daily practice, and original literary works.
A reference lexicon explaining the meanings, origins, and histories of symbols.
An online museum presents stories and explanations about notable numbers for curious readers.
A free app that teaches Igbo through guided lessons, native-speaker audio, games, and folktales.
Generates downloadable, print-ready graph, lined, and specialty paper for students, teachers, and craftspeople.
Helps people map their views on AIโs future with a short quiz and compare them with public figures.
Finds alternative English word groupings that sound like a phrase you type.
A browser-based ear training app that helps musicians practice recognizing intervals, chords, scales, progressions, and notes.
Helps software engineers practice system design and AI/ML interviews with exercises and feedback.
Provides AI tutoring for college coursework with explanations that include drawings.
A Windows learning app that helps beginners explore how language models work through explanations and hands-on experiments.
Turns studentsโ notes, PDFs, slides, and lectures into study guides, quizzes, flashcards, games, and podcasts.
A browser-based math workspace for calculating expressions and exploring step-by-step reasoning privately on your device.
An interactive browser-based SQL tutorial that teaches learners through SQLite exercises, hints, and immediate feedback.
Teaches AI agent development and LLM evaluation through free lessons, interactive labs, and reference materials.
Helps users practice typing by transcribing books and random passages or racing classic texts.
Aligns audiobooks with ebooks to create timed subtitles, read-along EPUBs, and videos.
Helps students organize course deadlines, capture lecture notes, find sources, and format assignments in one workspace.
Runs an interactive global climate model in a browser for exploring weather, oceans, and climate processes.
A daily medical diagnosis game that helps doctors and medical students practice clinical reasoning.
An iOS camera app simulates a fruit fly's nervous system so it reacts to what it sees in your room.
Helps learners build faster recall of math topics through adaptive practice in a browser or on iOS.
Helps learners drill math skills with generated problems and spaced repetition on iOS and web.
Explores human history across 12,000 years with historical events and charts of population, energy, health, wealth and AI compute.
A music-reading app that teaches pianists to read notation through MIDI keyboard lessons and practice.
Provides interactive coding lessons, examples, and a live compiler for people learning programming.
Translates text to Morse code and decodes Morse audio or text in a browser, with playback and reference charts.
Converts LaTeX equations into PNG, SVG, or JPG images in the browser for use in documents, slides, and websites.
A macroeconomics textbook presenting a framework for understanding economic growth, recessions, and policy.
A directory of research programs, fellowships, courses, and jobs for people pursuing frontier AI and AI safety work.
A mathematical reference site cataloging known point configurations, proofs, and verification tools for the Heilbronn problem.
Helps people practice interviews, presentations, and everyday speaking with recorded drills and feedback.
Turns recorded lectures and course materials into editable study notes and quizzes for students.
A piano practice app for Mac and Windows that transcribes songs and lets learners play along at their own pace.
Provides practice exercises for working memory, reasoning, pitch recognition, and mental math.
Helps Mac students annotate PDF textbooks with inline notes and compile them into study guides.
A macOS app that helps Chinese readers look up words, translate sentences, and save flashcards.
Offers seven free word games that help language learners practice at their measured level.
Teaches German noun genders through spaced-repetition flashcards, practice games, and duels for German learners.