Developer Tools
That Respect Your Privacy
75+ essential utilities in one fast desktop app.
100% offline. Zero telemetry. All platforms.
Free forever · No account required · macOS, Windows, Linux
Built for developers
Tools that actually save you time
Stop switching between browser tabs and signing up for services. Everything works instantly, offline.
JSON Formatter & Validator
Format, validate, minify, and explore JSON with a tree view. Handles multi-MB files instantly — no browser limits.
Try it free
JWT Debugger
Decode, inspect, and verify JWTs instantly. Color-coded header, payload, and signature sections with expiration checks.
Try it free
Dummy Data Generator
Generate realistic mock data — users, addresses, transactions — in JSON, CSV, or SQL. Perfect for testing and prototyping.
Try it free
Text Diff Checker
Compare two texts side-by-side with highlighted insertions and deletions. Spot changes instantly with color-coded diffs.
Try it freePlus 71 more tools included in the desktop app.
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Your data never leaves
your machine.
Unlike online tools, DevKitHub processes everything locally. No servers. No telemetry. No analytics.
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