Avast Secure Browser vs SigmaOS
| Avast Secure Browser | SigmaOS | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | No | No |
| Paid from | $3.33/mo | — |
| Open source | No | No |
| Platforms | extension, Web | macOS |
| Free plan | Yes | Yes |
| Paid from | $5.99/mo | $20/mo |
| Supported platforms | both | desktop |
| Browser engine | chromium | webkit |
| Built-in ad blocking | Yes | Yes |
| Tracking protection | Privacy Guard anti-tracking techniques | — |
| Extension support | chrome_store | both |
| Cross-device sync | Yes | Yes |
Both are listed in Best Web Browsers. On Inferse, Avast Secure Browser scores higher on our published basis.