DevSexy

DevSexy brings 35 developer tools into one focused workspace. Format and validate JSON, inspect JWT claims, convert Base64, test regular expressions, and compare text without uploading your input.

The free online developer tools run locally in your browser with no account required. DevSexy for Mac adds a native offline developer toolbox, an immersive editor, and Option shortcuts for switching tools. The Mac app offers a trial and a one-time license.

Built for developers debugging API payloads, checking configuration changes, and handling everyday data conversions while keeping source data on their own device.