Every tool we've built — no signup, no download, no tracking. Runs entirely in your browser.
| Site | Tools | Cost | Signup required | Runs in browser | Data leaves device |
|---|---|---|---|---|---|
| ⚡ Tabutility | 143 | Free | Never | 100% in browser | Never |
| Calculator.net | ~200+ | Free | No | Mostly | Some |
| Omni Calculator | ~3,700 | Free / Pro | Optional | Yes | Some (save feature) |
| Tools.so | ~50 | Free / Paid plans | Some require | Partial | Some |
Tabutility's focus: privacy-first tools that run entirely in your browser. No accounts, no uploads, no tracking.