Open source. Open possibilities.

Educational collection of algorithms implemented in Java, intended for learning purposes. Includes a full directory of applications, contribution guidelines, and support for running/editing in Gitpod.

JavaScript implementations of popular algorithms and data structures, each with its own README explanation, complexity notes, and links to further reading. Useful for study and interview prep.

labuladong's algorithm notes: an open-source tutorial and problem-solving toolkit centered on LeetCode. With 60+ original Chinese articles, core pattern frameworks, a visualization panel, and multi-platform plugins, it helps learners master data structures and algorithms conceptually rather than just memorizing code.

Hello Algorithm is a free open-source introductory tutorial on data structures and algorithms, featuring animated illustrations and runnable code. It supports five languages and 14 programming languages, making it ideal for beginners.

An interactive visual learning platform designed to make algorithms and data structures easy to understand through step-by-step animations, custom inputs, and playback controls.