Categories
An interactive reference teaches developers Common Expression Language syntax and features through examples.
Provides Pakistani pre-medical students with free MDCAT practice questions, past papers, notes, mock tests, and calculators.
Provides bite-sized lessons in psychology, strategy, and mental models as an alternative to mindless scrolling.
A book for readers interested in the history of the Lisp programming language.
A digital archive of US Forest Service ranger Reuben P. Box’s 1927 - 1945 work diaries for historical researchers and readers.
A free reference site helping learners and engineers study Kubernetes internals and prepare for the CKA exam.
Explores scales and chords on piano and guitar for musicians learning music theory.
A safe AI tutor that guides children through homework with Socratic questions instead of giving answers.
Helps educators train and assess students’ critical thinking through guided AI conversations and classroom analytics.
A field guide that teaches practitioners how to build AI products through session-by-session notes.
Generates structured study plans with chapters, topic dependency graphs, and video recommendations for learners.
Provides collaborative math workspaces and calculators for students, researchers, and AI agents.
Translates English text and web pages into a consistent phonetic spelling system for readers and learners.
Helps language learners practice with free audiobooks, synchronized text, and instant translations.
Teaches Kubernetes through interactive cluster management simulations and challenges.
A paid app for exploring nine strange attractors in 3D on iPhone, iPad, Mac, and Playdate.
Calculates and projects cumulative GPA for college and university students across multiple grading scales.
An adaptive typing tutor that helps users improve touch-typing speed and accuracy by training weaker patterns.
Helps learners build vocabulary with swipe-based lessons, quizzes, spaced repetition, and audio on Apple devices.
Lets users zoom into and save images of the Mandelbrot set in a web browser.
A language-learning platform with courses for 75+ languages and a wide range of language pairs.
Lets users explore vintage operating systems in a browser using emulated hardware.
Helps speakers practice pronouncing words in speech and presentation scripts.
A curriculum for analyzing structural patterns across music, cinema, literature, and other creative fields.
An interactive collection of examples covering mathematics, science, engineering, finance, and aesthetics.
An iOS app for parents and caregivers to log read-aloud sessions, books, readers, and languages.
A free, non-dilutive accelerator helping AI and agentic AI startups develop into venture-backed companies.
Turns documents and questions into visual knowledge maps that groups can share and use to generate exams.
A free guide helps non-engineers build and publish a dashboard using Claude Code.
An interactive platform where developers practice JavaScript debugging by fixing code bugs and learning from tests.
A mobile app offering Hindu scriptures, spiritual practices, festivals, and Vedic astrology for people exploring Hinduism.
Teaches PHP and Laravel through gamified courses and coding exercises.
Calculates how far you have traveled through space since birth and explores distances to celestial objects.
A daily quiz that helps people learn science through short questions and facts.
Provides children ages 4 - 15 with AI chat, learning help, creative tools, and parental controls.
Lets students and history enthusiasts plot, edit, upload, and share historical timelines, including BCE dates.
Turns videos into language lessons with AI transcription, bilingual subtitles, and vocabulary learning.
Helps researchers discover and read arXiv papers through personalized feeds, AI summaries, and extracted figures.
A game for programmers to practice reading unfamiliar code by filling in missing lines from real GitHub repositories.
Provides free AI prompting education, research on AI models, and practice resources for learners and builders.
Connects students seeking academic help with peers offering tutoring or paid study support.
Provides beginner tutorials for installing, configuring, and connecting OpenClaw to messaging platforms.
Provides hands-on simulations to train learners in IT roles such as support, development, QA, cloud, and security.
Provides hands-on AI security training through CTF challenges against live LLM agents.
An interactive historical timeline explorer for learning about US, world, and British history.
Helps language learners practice spoken conversations with AI teachers in realistic scenarios.
An ear-training app that helps musicians practice matching pitches and intervals by tuning drone sounds.
An offline, locally personalized feed that recommends Simple Wikipedia articles based on what you engage with.
An interactive map for exploring historical movies by their time periods and locations.
An interactive periodic-table experience for exploring chemical elements.
Lets people explore, map, and add historical photographs from libraries, museums, and local collections.
A daily puzzle game that teaches CSS flexbox by having players match target layouts.
Provides personalized AI-generated career roadmaps based on users’ skills, interests, and aspirations.
Provides hands-on cybersecurity courses, challenges, and training paths for people and teams developing security skills.
Gives founders free AI feedback on Y Combinator applications and may match standout applicants with YC alumni reviewers.
An ebook teaching AI prompting techniques with templates and examples for professionals.
Helps IT certification candidates prepare with practice questions, flashcards, and online exam simulators.
An interactive browser tool that shows how Groth16 zero-knowledge proofs are generated and verified.
Provides real-time AI-generated coding solutions and explanations during software engineering interviews.
A browser-based game where players solve programming challenges through a story set in 19th-century Estonia.
A chess training game for practicing blindfold play with voice controls, fading boards, and AI opponents.
Offers personalized, bite-sized learning paths with progress tracking and career exploration through an app or browser.
Lets children create and refine browser games by describing them to AI, with parent controls and safety features.
An SDK for edtech and training platforms that detects learner states and suggests interventions from interaction behavior.
Teaches Git through interactive, hands-on lessons in code editors for beginners and experienced developers.
Teaches engineers secure code review through interactive vulnerability challenges and learning resources.
Helps programmers practice languages with adaptive quizzes, progress tracking, and performance analytics.
Helps readers learn deeply and retain what they read through an immersive reading companion.
Assesses judgment skills and tracks users’ accuracy on predictions about real-world events.
Helps people learn languages through AI conversations, corrections, and personalized vocabulary practice.
Provides interactive courses, quizzes, visual learning paths, and AI tutoring for learners in technical and scientific subjects.
Helps engineers practice system design interviews with AI feedback, interactive whiteboards, and guided lessons.
Provides structured video lectures and interactive tools for learning multivariable calculus.
An online learning platform teaching AI model training and deployment through coding lessons, projects, and assessments.
A homeschooling marketplace that helps families find curriculum, classes, tutors, and other learning resources.
A reference sheet for people preparing for the AWS Solutions Architect Associate or Professional exams.
An online Bible reader for exploring translations, searching concepts, and studying selected passages.
Provides hands-on cybersecurity labs for learners to practice on their own virtual machines and capture flags.
An Android chess app that reviews games, explains mistakes, and creates puzzles for players to practise.
Creates editable, reviewable course and training videos from source materials or topics.