A list of Free Software network services and web applications which can be hosted on your own servers
Master programming by recreating your favorite technologies from scratch.
freeCodeCamp.org's open-source codebase and curriculum. Learn math, programming, and computer science for free.
:books: Freely available programming books
Learn how to design large-scale systems. Prep for the system design interview. Includes Anki flashcards.
Interactive roadmaps, guides and other educational content to help developers grow in their careers.
A complete computer science study plan to become a software engineer.