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Practice & Challenges · Documentation & Learning
Annual series of fun programming puzzles every December.
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Practice & Challenges · Documentation & Learning
Annual series of fun programming puzzles every December.
Practice & Challenges · Documentation & Learning
Community-driven coding kata platform across many languages.
Communities · Documentation & Learning
Community where developers write articles and share knowledge.
References · Documentation & Learning
Fast, offline-capable API documentation browser combining 100+ references.
Cheatsheets · Documentation & Learning
Rico's cheatsheets: concise cheatsheets for dozens of tools and languages.
Practice & Challenges · Documentation & Learning
Free coding practice and mentoring in 70+ languages.
Courses & Tutorials · Documentation & Learning
Non-profit curriculum with free courses and certifications.
Communities · Documentation & Learning
Y Combinator's tech news and discussion community.
Communities · Documentation & Learning
Blogging platform for developers with custom domains.
References · Documentation & Learning
The Modern JavaScript Tutorial — the deepest free JS reference from basics to advanced browser APIs.
References · Documentation & Learning
The definitive reference for HTML, CSS and JavaScript, by Mozilla.
Cheatsheets · Documentation & Learning
Collection of developer cheatsheets for many languages and tools.
Courses & Tutorials · Documentation & Learning
Blog tutorial open-source berbahasa Indonesia — Linux, Python, JavaScript dan dasar pemrograman, gratis selamanya.
Practice & Challenges · Documentation & Learning
Mathematical and computational programming problems.
References · Documentation & Learning
The largest curated directory of free public APIs — 1,400+ entries across 40 categories with auth requirements noted.
Cheatsheets · Documentation & Learning
Clean, searchable cheat sheet collection for developers.
References · Documentation & Learning
Official repository of Internet RFC specifications.
Courses & Tutorials · Documentation & Learning
Community-driven developer roadmaps, guides and skill assessments.
Communities · Documentation & Learning
The largest Q&A community for programmers.
References · Documentation & Learning
The most-starred system design study guide — scalable architectures, trade-offs and exercises, free and open source.
Practice & Challenges · Documentation & Learning
Free, curated interview prep: algorithms study plans, behavioral questions and resume advice by ex-Facebook engineers.
Courses & Tutorials · Documentation & Learning
Free, open-source full-stack web development curriculum.
Cheatsheets · Documentation & Learning
Community-maintained, practical examples for every CLI command.
Courses & Tutorials · Documentation & Learning
Beginner-friendly web development tutorials with try-it editors.