Free library of over 70,000 e-books. Classic literature and historical texts in the public domain.
Open Source
Learning resources and educational tools tagged with “Open Source”.
Open-source learning management system used by 300M+ users. Customizable, scalable, and free for educators.
Visual programming language by MIT for kids. Create stories, games, and animations while learning coding concepts.
Open-access repository of scientific papers in physics, mathematics, computer science, and more. Preprint server by Cornell University.
Free, open-source reference management tool. Collect, organize, cite, and share research sources effortlessly.
Powerful, intelligent spaced-repetition flashcard app. Highly customizable and popular with medical students and language learners.
Free interactive math and science simulations from University of Colorado Boulder. Explore physics, chemistry, biology, and earth science.
Free full-stack web development curriculum. Project-based learning with Ruby, JavaScript, and React paths.
Learn to code for free. Full-stack web development curriculum with certifications in responsive design, JavaScript, APIs, and more.