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Climate, green economy and circular economy study

Illustration study centered on telling stories.

Defensive-security study through investigative scenarios.

Clinical video courses with cases, quizzes and handouts.

AI tool that turns textbook chapters and articles into notes.

Chess reporting with links to study and training tools

Study software design by rebuilding familiar tools in Python

Online preparation courses and study guides for exams including TOEFL, IELTS and TOEIC.

Free language study for real-life situations.

A university organized around online study.

School-entry books, assessment papers, mock tests and online practice.

Free professional learning for humanitarian and development work

Free practice resources for several English exams, including IELTS, TOEFL, TOEIC and Cambridge English.

UPSC and state civil-service preparation with courses, live classes, current affairs and quizzes.

Solve and inspect mathematical expressions

An AI browser from Perplexity for Mac, Windows, iOS and Android.

Individual Chinese lessons with live teachers.

Find human scans, retopologised characters and anatomy reference assets

AI writing and study tools for students

A JavaScript learning book with an online reading version

Spanish podcasts and transcripts with level-based starting points.

Game Boy emulation with user and debugging tools

Donation-supported language materials without registration.

Spanish listening through conversations by a bilingual couple.