BrowserOS vs SigmaOS
| BrowserOS | SigmaOS | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | No | No |
| Paid from | Free | — |
| Open source | Yes | No |
| Platforms | extension, Linux, macOS, Windows | macOS |
| Free plan | Yes | Yes |
| Supported platforms | desktop | desktop |
| Browser engine | chromium | webkit |
| Extension support | chrome_store | both |
| Open source | Yes | — |
| Paid from | — | $20/mo |
| Built-in ad blocking | — | Yes |
| Cross-device sync | — | Yes |
Both are listed in Best Web Browsers. On Freedom251, BrowserOS scores higher on our published basis.