Free
Practice & Challenges · Documentation & Learning
Annual series of fun programming puzzles every December.
puzzlespracticeevent
Documentation & Learning
References, cheatsheets, courses, practice platforms and communities.
33 tools in Documentation & Learning
Freemium
Courses & Tutorials · Documentation & Learning
Kelas online UI/UX dan web development berbahasa Indonesia dengan studi kasus portofolio dan akses selamanya.
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Freemium
Courses & Tutorials · Documentation & Learning
Alex Xu's visual system design courses and newsletter — architecture explained with diagrams, not jargon.
system-designarchitecturelearninginterview
Free
Practice & Challenges · Documentation & Learning
Community-driven coding kata platform across many languages.
katapracticechallenges
Free
Communities · Documentation & Learning
Community where developers write articles and share knowledge.
bloggingcommunityarticles
39.5KFree
DevDocs
Open SourceReferences · Documentation & Learning
Fast, offline-capable API documentation browser combining 100+ references.
documentationreferenceoffline
14.5KFree
DevHints
Open SourceCheatsheets · Documentation & Learning
Rico's cheatsheets: concise cheatsheets for dozens of tools and languages.
cheatsheetreference
Freemium
Courses & Tutorials · Documentation & Learning
Platform belajar coding terdepan di Indonesia — kelas terstruktur, reviewer expert, dan sertifikat diakui industri.
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Free
Exercism
Open SourcePractice & Challenges · Documentation & Learning
Free coding practice and mentoring in 70+ languages.
practicementoringexercises
456.7KFree
freeCodeCamp
Open SourceCourses & Tutorials · Documentation & Learning
Non-profit curriculum with free courses and certifications.
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Freemium
References · Documentation & Learning
Large computer science portal with tutorials and interview content.
tutorialsalgorithmscs
Free
Communities · Documentation & Learning
Y Combinator's tech news and discussion community.
newscommunitystartups
Freemium
Practice & Challenges · Documentation & Learning
Coding challenges and technical interview practice platform.
interviewschallengespractice
Free
Communities · Documentation & Learning
Blogging platform for developers with custom domains.
bloggingcommunity
Free
javascript.info
Open SourceReferences · Documentation & Learning
The Modern JavaScript Tutorial — the deepest free JS reference from basics to advanced browser APIs.
javascriptlearningtutorialreference
Freemium
Practice & Challenges · Documentation & Learning
The most popular platform for coding interview preparation.
interviewsalgorithmspractice
Free
References · Documentation & Learning
The definitive reference for HTML, CSS and JavaScript, by Mozilla.
documentationhtmlcssjavascript
Free
Cheatsheets · Documentation & Learning
Collection of developer cheatsheets for many languages and tools.
cheatsheetreference
Free
Petani Kode
Open SourceCourses & Tutorials · Documentation & Learning
Blog tutorial open-source berbahasa Indonesia — Linux, Python, JavaScript dan dasar pemrograman, gratis selamanya.
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Freemium
Courses & Tutorials · Documentation & Learning
Kelas online Eko Kurniawan — tutorial backend, Java, Go dan arsitektur berbahasa Indonesia dari dasar sampai mahir.
indonesianbahasa-indonesiabackendjava
Free
Practice & Challenges · Documentation & Learning
Mathematical and computational programming problems.
mathpuzzlespractice
Free
Public APIs
Open SourceReferences · Documentation & Learning
The largest curated directory of free public APIs — 1,400+ entries across 40 categories with auth requirements noted.
apidirectoryreferencelearning
10.9KFree
QuickRef.ME
Open SourceCheatsheets · Documentation & Learning
Clean, searchable cheat sheet collection for developers.
cheatsheetreference
Freemium
References · Documentation & Learning
Clear catalog of design patterns and refactoring techniques.
design-patternsrefactoringlearning
Free
References · Documentation & Learning
Official repository of Internet RFC specifications.
rfcstandardsnetworking
368.7KFree
roadmap.sh
Open SourceCourses & Tutorials · Documentation & Learning
Community-driven developer roadmaps, guides and skill assessments.
roadmapslearningcareer
Free
Communities · Documentation & Learning
The largest Q&A community for programmers.
q&acommunityprogramming
Free
System Design Primer
Open SourceReferences · Documentation & Learning
The most-starred system design study guide — scalable architectures, trade-offs and exercises, free and open source.
system-designarchitectureinterviewlearning
Free
Tech Interview Handbook
Open SourcePractice & Challenges · Documentation & Learning
Free, curated interview prep: algorithms study plans, behavioral questions and resume advice by ex-Facebook engineers.
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4.6KFree
The Odin Project
Open SourceCourses & Tutorials · Documentation & Learning
Free, open-source full-stack web development curriculum.
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Free
tldr pages
Open SourceCheatsheets · Documentation & Learning
Community-maintained, practical examples for every CLI command.
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Free
Courses & Tutorials · Documentation & Learning
Beginner-friendly web development tutorials with try-it editors.
tutorialswebbeginner
Free
Courses & Tutorials · Documentation & Learning
Channel YouTube Sandhika Galih — tutorial web development berbahasa Indonesia paling populer, dari HTML sampai framework.
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