DevDocs
FreeCombines hundreds of API docs into one fast, searchable, offline-capable interface.
Why it's here: Cuts the time between "what's the syntax again" and getting back to work.
The Hub
The best resources for the craft.
A working library — not a link dump. Every entry here is something worth your time: free where free exists and is genuinely good, paid where the depth justifies it. Organized by what you're actually trying to learn.
Tools & Reference
Keep these open in a tabexplainshell
FreePaste any shell command and get each flag and argument explained inline — invaluable for dense one-liners.
Why it's here: The fastest way to actually understand a command you copied from Stack Overflow.
regex101
FreeLive regex testing with a real-time explanation panel across multiple language flavors.
Why it's here: Turns regex from guesswork into something you can actually reason about.
Excalidraw
FreeA hand-drawn-style whiteboard for architecture diagrams and quick system sketches — no account required.
Why it's here: The fastest way to turn a system in your head into something you can share.
roadmap.sh
FreeCommunity-maintained, visual learning roadmaps for dozens of specializations — backend, DevOps, systems design, and more.
Why it's here: When "what should I learn next" is the actual question, this is the map.
The canonical, maintained source for Linux kernel and C library man pages — searchable online.
Why it's here: `man` in your browser, kept current, cross-linked, and always free.
No resources match that search.