Made by thesonu.me
The developer toolbox, refined.
JSON, JWT, regex, encoding, hashing, colors, and more — all in one focused workspace. No tracking, no uploads, everything runs in your browser.
92+
Tools
1M+
Uses
99.9%
Uptime
OSS
Friendly
Popular tools
A few essentials to start with. Use search or categories for the rest.
Missing a tool? Tell us.
DevBox is built in the open by thesonu.me. Send requests, feedback, or bug reports to hello@thesonu.me.