dev101.io

Privacy-first, keyboard-driven hub for 50+ dev tools: format, encode, hash, diff, convert, generate, inspect — all in one place, 100% client-side.  Format JSON, decode JWTs, hash strings, convert timezones, build regex — 62 tools in one box. Transforms run in your browser, so your data never leaves the tab. No ads, no signup, no uploads. ⌘K to jump to any tool. Installable, works offline. Free.