Tools every developer should know
Command lines and websites, all free or open source.
jq
The Swiss army knife of JSON on the command line.
regex101
Explains every group of the expression while you type it.
fzf
Interactive filter — wire it to your history, files and branches.
ripgrep
Recursive grep that honours .gitignore and is absurdly fast.
Dive
Inspect a Docker image layer by layer.
Excalidraw
Hand-drawn diagrams, perfect for throwaway architecture.
Caniuse
What browsers can do, and since when.
httpie
Readable curl, with colour and JSON by default.