Resource hub · free to explore
Learn faster and stay ahead with a curated hub built for IT professionals and curious learners.
Hand-picked websites, practical references, and production-grade Git repositories—so you study how real systems are built, not just how hello-world demos compile. No paywall on the essentials.
Sites & tools
Pick up speed with sites you will reopen
Everyday utilities, AI-assisted research, and deliberate practice—tagged so you can browse the full directory by keyword.
Perplexity
Answer-first research with citations—fast context for unknown domains.
AI toolResearchProductivityLeetCode
Interview-style problems with editorials; use sparingly alongside real projects.
Programming practiceAlgorithmsCareerExercism
Mentored tracks across languages—great for habits and readable solutions.
Programming practiceLanguagesMentorshipregex101
Explain and debug regular expressions with step-by-step matchers.
ProductivityDebuggingTextExplainShell
Unpack cryptic shell commands flag-by-flag before you paste them.
ProductivityCLISecurity
Repositories
Study codebases that ship and stay maintainable
Start with large, well-run projects—see how APIs evolve, releases are guarded, and docs meet operators where they are.
- ReactFrameworkTypeScript
vercel/next.js
The React framework—study routing, caching, and how a large OSS project evolves.
132k+28k+ - SystemsCompilerLanguage
rust-lang/rust
A disciplined compiler project: tests, RFCs, and long-horizon maintenance.
104k+14k+ - InfraDistributed systemsGo
kubernetes/kubernetes
Production orchestration at scale—API design, controllers, and reliability patterns.
114k+39k+ - RuntimeJavaScriptPlatform
nodejs/node
Core runtime and lib—see how a platform balances stability and velocity.
109k+30k+
Free collections
Videos, docs, and mixed bags—no gate on the essentials
Curated playlists, canonical references, and practical lists you can work through at your pace.
- Mixed
Distributed systems case studies
Articles and talks unpacking real outages, tail latency, and backoff.
VideosArticlesArchitecture - Document
Contributing to open source (practical)
Short reads on triage, PR hygiene, and navigating maintainer feedback.
GuideOSSCommunity - Course
high-performance browser fundamentals
Primers on rendering, scheduling, and measuring what users feel.
PerformanceFrontendChrome - Mixed
Security engineering reading list
Threat modeling, auth pitfalls, and pragmatic hardening checklists.
SecurityChecklistWeb
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