Categories
Explore a scientifically based star catalog and universe in an interactive browser experience.
A learning platform that teaches skills through daily lessons and challenges organized into five-day cohorts.
Presents interactive science stories in a browser with 3D visuals, spatial audio, and guided insights.
Helps experienced engineers practice multi-step coding interview problems for AI labs in Python and TypeScript.
Teaches how AI works through lessons explained with cricket, football, or music analogies.
A browser-based tool for practicing spoken English by recording responses to prompts.
A browser puzzle game where players build and debug distributed system architectures.
An interactive map tool compares Mercator and Equal Earth projections to show countries at their true relative sizes.
Helps developers prepare for .NET interviews with a question roadmap, practice materials, and progress tracking.
An interactive experience for exploring Earth's 4.54-billion-year history and major geological eras.
Provides free timed practice tests and study guides for AI and cloud certification exams.
An interactive tool for drawing wheel shapes and visualizing the road they roll along.
An interactive simulator lets people explore special relativity by moving through a world where light travels at walking speed.
A beginner-friendly book explaining quantum computing theory, hardware, applications, and the state of the field.
An interactive tool for exploring musical scales, chords, and progressions.
An interactive explainer showing how satellites and signal timing help a phone determine its position.
An interactive exercise that helps visitors consider the personal impact of dividing land without residents’ consent.
An interactive atlas for exploring Caribbean islands through their histories of conquest, treaties, occupation, and independence.
An English pronunciation app that gives personalized AI feedback and lessons for language learners.
A curated, filterable library of beginner whittling projects with tutorials and patterns.
An interactive whole-brain simulation lets visitors observe a fruit fly receiving continuous sugar stimulation.
Turns notes, slides, or syllabi into interactive courses with AI-guided lessons and mastery-based practice.
Helps learners practice speaking in 77 languages through sentence-building, listening, and spoken exercises.
Provides browser-based data science work simulations for practicing SQL, Python, analytical judgment, and handoffs.
Provides step-by-step math solving and structured lessons for learners from arithmetic through graduate topics.
Converts text to binary and binary to text in a browser for learners and anyone working with binary data.
Teaches modern AI concepts through short visual lessons and quizzes for learners.
Answers questions about Tesoro High School using its public webpages, PDFs, documents, and district information.
A constructed auxiliary language with lessons, a dictionary, grammar, and translation resources for learners.
An interactive explorer for comparing species ancestry, traits, and ecological relationships using scientific data.
Provides career roadmaps, certification guides, and paid courses for people pursuing technology careers.
Helps people find useful moments in AI Engineer talks through searchable summaries and timestamps.
A language-learning platform where people practice through ranked speaking matches, avatar teaching, and cultural communities.
Provides real-time AI voice simulations for practicing sales, support, and leadership conversations.
A browser-based puzzle campaign for designing computer hardware with a TypeScript HDL.
A cross-platform reader that syncs with Mendeley libraries and lets researchers read, highlight, and annotate papers.
Provides free interactive logic exercises for students learning formal and informal logic.
Provides technical lecture videos with chat and generates custom lectures for learners on technical topics.
An interactive map for comparing Chicago addresses across historical Sanborn atlas editions.
A knowledge and study app for connecting notes, books, videos, flashcards, and AI-assisted learning in one workspace.
A family of local-first practice apps for learning and playing guitar, ukulele, bass, and drums.
A creative coding studio where young creators build projects with AI and explore its capabilities and limits.
Helps language learners study videos and audio with synced transcripts, instant word definitions, and Anki exports.
Helps foreign residents in Korea prepare for KIIP exams with practice questions and explanations in 16 languages.
Provides free, fullscreen classroom timers and clocks for teachers to display during lessons, activities, and exams.
Provides Finnish-English dictionary lookups with inflection search in a browser or downloadable desktop app.
A searchable library of curated ideas and quotes from founders, thinkers, and builders.
Teaches AI engineering through lessons, production incident labs, projects, and assessments.
Interactive exercises teach how compute, communication, and dependencies work in distributed LLM training traces.
Shows the real-time positions of solar system objects and spacecraft alongside space news and launch updates.
A curiosity app for children ages 5 - 14 that answers questions, checks understanding, and tracks what they learn.
An iPhone and iPad app that reads webpages, books, and documents aloud while highlighting text for readers.
Helps creators build, host, and sell online courses without a monthly subscription.
An online supply chain simulation for learners and instructors to explore the bullwhip effect solo or in groups.
Helps A2 - B1 Spanish learners practice with stories tailored to their vocabulary and review needs.
An interactive map lets curious learners explore connected ideas and read explanations at different levels of detail.
An interactive forest experience where visitors explore a habitat, use a field guide, and hear its creatures.
Provides visual and performance arts camps and classes for young people in New Orleans, with scholarships and community events.
A browser-based simulation of Congress, elections, the executive branch, and the courts.
Displays the Maya calendar in a familiar monthly calendar format and explains its date cycles.
A visual collection documenting the history of interfaces for interacting with artificial intelligence.
Teaches software engineers LLM serving and training through gamified roadmaps, graded drills, and verified milestones.
An interactive lesson teaches people to calculate weekdays mentally using Conway's Doomsday Rule.
Explore planets, stars, and galaxies in an interactive 3D universe in the browser.
Tracks satellites and near-Earth objects in 3D and provides space news and declassified UAP files.
Helps students learn from uploaded materials with AI tutoring, lessons, flashcards, quizzes, and practice exams.
An interactive guide to Odysseus’s journey with maps, Homeric text, translation, and historical context.
An interactive game-like course teaches product management through simulated customer decisions.
A community where people share mathematics and submit proofs for machine checking.
Provides browser-based French grammar exercises for people learning the language.
Explores research papers and ranks them using citation relationships tailored to a researcher or community.
An interactive guide that teaches developers Protocol Buffers concepts, schemas, and encodings.
A free program for teens to learn Python by building a text adventure game and earning stickers.
Lets readers explore Homer’s Odyssey by zooming between the poem, books, episodes, scenes, and passages.
Helps students and professionals prepare for exams with AI-generated quizzes and personalized spaced-repetition study plans.
A free browser-based suite of private LaTeX tools for creating resumes, papers, diagrams, and other documents.
Helps Chinese learners study vocabulary, expressions, and grammar through dialogue from films and television.
A browser extension replaces selected English words on webpages with Chinese vocabulary matched to the learner’s level.
Helps students import flashcard sets and study them with quiz and learning modes.
An interactive puzzle platform that helps software engineers learn technical concepts and prepare for interviews.
An interactive game lets players make decisions in realistic business scenarios and explore different jobs.
Provides free interactive quizzes for learning country flags, capitals, maps, shapes, currencies, and languages.
Helps users organize concepts into prerequisite-ordered decks and explore how ideas depend on one another.
A daily news podcast explains important current events clearly and factually for curious kids.