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