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Clinical video courses with cases, quizzes and handouts.

GIS learning plans, web courses and guided labs.

Short Chinese videos with a guided study schedule.

Study software design by rebuilding familiar tools in Python

A systems textbook with interactive learning resources

Technical data and calculations for engineering study

An academic ebook subscription with desktop and mobile reading

Study words and concordances in a text corpus

Study languages through shows, films and music.

Workplace language training tailored to roles and teams.

Kanji and vocabulary study using mnemonics and spaced review.

A sequenced Japanese learning plan across core skills.

Japanese grammar, reading and character study in a guided course.

Mathematical worksheets with natural notation and units

Vocabulary flashcards built from books, articles and videos you already use.

Study platform that turns notes and files into flashcards, quizzes and games.

Free professional learning for humanitarian and development work

AI tool that turns PDFs, videos, and webpages into mind maps.

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.

A course hub for global-health professionals

A browsable mathematical reference organized by subject

Solve and inspect mathematical expressions

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