Free & Open Source

Your toolkit forthe modern web

Professional tools that run in your browser. No signups. No uploads. Free forever.

JSON Tools

The complete JSON toolkit

Format, validate, compare, and convert JSON. AI-powered repair. Mock APIs. All in your browser.

Create songs from text

Generate original songs with AI-written lyrics. Choose any genre, get synced lyrics, and share your tracks.

Diagrams as code

Professional Mermaid editor with live preview, 4 curated themes, and unlimited PNG/SVG exports. 100% client-side.

100% Browser-based

No Signup Required

Open Source