Educational

Free world-class K-12 and college-level education. Math, science, coding, history and more.

Free access to hundreds of actual MIT course materials.

Free full-stack web development curriculum with certifications.

Free open-source web development curriculum. Highly regarded.

Audit most courses for free. Skip the certificate to avoid paying.

Top university courses. Audit for free.

Free Harvard courses including CS50 (highly recommended).

Free digital skills courses certified by Google.

Billions of free educational videos. Channels like 3Blue1Brown, Crash Course, etc.

Free gamified language learning app. 40+ languages.

Free spaced repetition flashcard software. Best way to memorize anything.

Computational knowledge engine. Free basic access. Excellent for math.

STEM learning through problem-solving. Some free content available.

Free online graphing calculator and math tools. Used in schools worldwide.

Free interactive math tools: graphing, geometry, 3D, statistics.

Step-by-step math problem solver. Free basic usage.

Free interactive science and math simulations by University of Colorado.

Free reference manager and research tool. Essential for academics.

Free knowledge management and note-taking. Excellent for students.

Browser extension that finds free legal versions of academic papers.

Free preprints in physics, math, computer science, and more.

AI-powered academic search engine. Free and comprehensive.

Aggregates open access research from thousands of repositories.

Access to scientific papers. Note: legality varies by country — check your local laws.