DevSexy

DevSexy brings 35 everyday developer utilities into one private workspace. Format and validate JSON, inspect JWT claims, encode and decode Base64, test regular expressions, compare text, inspect certificates, and convert structured data.

The free online developer tools process input locally in your browser, without uploading it to a remote conversion service. They help developers inspect API payloads, debug configuration and compare changes without switching between many tool sites.

DevSexy for Mac adds a native offline developer toolbox, direct Option shortcuts and a quick-switch HUD. The Mac app has a 15-day trial and a one-time license for the purchased version; the browser tools remain free.