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Open SourceReferences · Documentation & Learning
Fast, offline-capable API documentation browser combining 100+ references.
documentationreferenceoffline
Browse the complete directory — use filters to narrow down.
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.
References · Documentation & Learning
The Modern JavaScript Tutorial — the deepest free JS reference from basics to advanced browser APIs.
Courses & Tutorials · Documentation & Learning
Blog tutorial open-source berbahasa Indonesia — Linux, Python, JavaScript dan dasar pemrograman, gratis selamanya.
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.
Courses & Tutorials · Documentation & Learning
Community-driven developer roadmaps, guides and skill assessments.
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.