Course

openHPI offers free interactive online courses in computer science, IT and digital innovation.

Scientific Python Lectures is a set of learning materials about Python for scientific computing.

LitCharts provides literature guides, poetry guides, Shakespeare translations, mind maps and reading tools.

StudyPlan.dev offers an online C++ course that starts with programming basics and proceeds through project work.

Learn-C.org offers a free interactive C tutorial for people learning the language.

Envato Tuts+ offers free courses, tutorials and tips for learning creative skills.

Easy Auscultation offers lessons, quizzes, and guides for learning heart and lung sounds.

Lojban.io provides a free, open-source platform for studying Lojban, with resources, courses, and vocabulary decks.

Virtual Vacation lets users explore cities from home through walking and driving tours, live footage and a location-guessing quiz.

Create pages and websites with Tails, a Tailwind CSS site builder and component library.

Lazybird converts scripts into AI voiceovers for videos, podcasts, audiobooks, courses, and product demonstrations.

MyLanguages lists 94 free language courses with vocabulary, grammar, audio, and practical study guides.

PhET provides free simulations for physics, chemistry, biology, earth science and mathematics.

Evan Chen's site shares course notes, olympiad materials, teaching resources, and a blog.

Codeguage offers short self-study courses focused on core programming topics.

Stop the Bleed offers American College of Surgeons training to help people learn to control bleeding.

Liberation School publishes courses and learning materials about Marxism and political organizing.

Alison offers online courses with certificates and diplomas across career and study topics.

Deutsche Welle offers free online German courses from A1 through C1 with interactive exercises, audio, and video.

WatchDocumentaries organizes documentary videos into categories such as history, arts, biography, and business.

Open Music Theory is an open-source interactive online textbook for college-level music theory courses.

Learn Go by fixing small programs with this collection of examples, exercises, and quizzes.

JavaScript.info provides a detailed modern JavaScript tutorial in multiple languages.

StudyTogether connects students in an online community for shared study sessions and peer support.