Lets you experience a website the way someone with a disability would.

The definitive interactive guide to electronic music genres. Listen to samples, read histories, and trace the evolution from Detroit techno to future bass.

Google's collection of interactive music experiments. Make songs with shapes, visualize harmonics, play with rhythm — perfect for learning music fundamentals.

Daily geography puzzle — find a path between two countries by naming the countries in between. Shareable results, streak tracking.

Interactive simulations for physics, chemistry, and other sciences.

Open access repository of scholarly articles in physics, math, computer science, and more.

Professional network for scientists and researchers to share papers and results.

Site challenging misconceptions with engaging facts and stories.

Interactive map tool that lets you compare the real size of countries.

Trivia quiz website with thousands of quizzes across topics and subjects.

Popular trivia platform with quizzes on geography and general knowledge.

Interactive explanations and simulations that teach complex ideas.

Global time, calendar, and date calculators for everyday use.

Aggregator for millions of open access research papers.

Education Resources Information Center with journal articles and reports.

Gamified language learning using fill-in-the-blank practice.

Spaced repetition flashcard system for efficient memorization.

Research papers and preprints in social sciences and humanities.

Free educational games for kids covering math and reading.

Digital library of academic journals, books, and sources.

A curated collection of free educational and cultural resources: online courses, e-books, lectures, films, audiobooks, and language lessons from top universities and institutions.

Coding lessons and games for kids to learn programming.

Educational site with games, videos, and facts for children.

Visual tool to compare country and state sizes side by side.

A retired math teacher has built full-blown math lessons for every grade, from 1st to 12th, and includes AP math lessons — all for free, relying only on donations.

Nonprofit providing coding lessons and resources for students.

Math games, lessons, and puzzles for children.

Directory of open access scientific and scholarly journals.

Convert units across categories like length, weight, temperature, and more.

Language learning platform with email-based lessons and vocabulary.

Gamified math learning platform for children.

Interactive science experiments and demonstrations for students.

Free online university lectures and courses from top schools.

Online planetarium to explore stars, constellations, and planets.

Text-to-speech tool for converting written text into spoken audio.

Study guides and summaries for literature and more.