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Best SigmaOS Alternatives in 2026

Updated

20 apps from web browsers ranked against SigmaOS on the same published basis.

  1. 1
    Mozilla Firefox Free plan Open sourceAndroidextensioniOSLinuxMac Free9.7
    SigmaOS vs Mozilla Firefox
  2. 2
    Brave Browser Free plan Open sourceAndroidiOSLinuxMacWin $2.50/mo9.7
    SigmaOS vs Brave Browser
  3. 3
    Waterfox Free plan Open sourceAndroidextensionLinuxMacWin $5/mo9.5
    SigmaOS vs Waterfox
  4. 4
    Tor Browser Free plan Open sourceAndroidLinuxMacWin Free9.4
    SigmaOS vs Tor Browser
  5. 5
    Mullvad Browser Free plan Open sourceLinuxMacWin Free9.3
    SigmaOS vs Mullvad Browser
  6. 6
    LibreWolf Free plan Open sourceLinuxMacWin Free9.3
    SigmaOS vs LibreWolf
  7. 7
    Aloha Browser Free plan Open sourceWinMacLinuxiOSAndroid Free9.1
    SigmaOS vs Aloha Browser
  8. 8
    Helium Browser Free plan Open sourceWinMacLinux Free9.0
    SigmaOS vs Helium Browser
  9. 9
    IronFox Free plan Open sourceAndroid Free8.9
    SigmaOS vs IronFox
  10. 10
    BrowserOS Free plan Open sourceextensionLinuxMacWin Free8.7
    SigmaOS vs BrowserOS
  11. 11
    ungoogled-chromium Free plan Open sourceWinMacLinuxAndroid Free8.7
    SigmaOS vs ungoogled-chromium
  12. 12
    Blanc Browser Free plan Open sourceMacWinLinux $4/mo8.6
    SigmaOS vs Blanc Browser
  13. 13
    Google Chrome Free plan AndroidextensioniOSLinuxMac Free8.4
    SigmaOS vs Google Chrome
  14. 14
    Microsoft Edge Free plan AndroidextensioniOSLinuxMac Free8.4
    SigmaOS vs Microsoft Edge
  15. 15
    MyIE Browser Free plan Open sourceWinLinuxiOSAndroid Free8.4
    SigmaOS vs MyIE Browser
  16. 16
    Opera Free plan AndroidextensioniOSLinuxMac $0.33/mo8.3
    SigmaOS vs Opera
  17. 17
    SPS Browser Pro Free plan Open sourceWin Free8.3
    SigmaOS vs SPS Browser Pro
  18. 18
    Vivaldi Free plan AndroidextensioniOSLinuxMac Free8.2
    SigmaOS vs Vivaldi
  19. 19
    Midori Browser Open sourceWinMacLinuxAndroidiOS 8.2
    SigmaOS vs Midori Browser
  20. 20
    SnowHaze Free plan Open sourceAndroidextensioniOS Free8.2
    SigmaOS vs SnowHaze

SigmaOS alternatives compared

#AppScoreFree planFromRuns on
1Mozilla Firefox9.7Free planFreeAndroid, Browser, iOS, Linux, Mac, Web, Windows
2Brave Browser9.7Free plan$2.50/moAndroid, iOS, Linux, Mac, Windows
3Waterfox9.5Free plan$5/moAndroid, Browser, Linux, Mac, Windows
4Tor Browser9.4Free planFreeAndroid, Linux, Mac, Windows
5Mullvad Browser9.3Free planFreeLinux, Mac, Windows
6LibreWolf9.3Free planFreeLinux, Mac, Windows
7Aloha Browser9.1Free planFreeWindows, Mac, Linux, iOS, Android
8Helium Browser9.0Free planFreeWindows, Mac, Linux
9IronFox8.9Free planFreeAndroid
10BrowserOS8.7Free planFreeBrowser, Linux, Mac, Windows
11ungoogled-chromium8.7Free planFreeWindows, Mac, Linux, Android
12Blanc Browser8.6Free plan$4/moMac, Windows, Linux
13Google Chrome8.4Free planFreeAndroid, Browser, iOS, Linux, Mac, Web, Windows
14Microsoft Edge8.4Free planFreeAndroid, Browser, iOS, Linux, Mac, Web, Windows
15MyIE Browser8.4Free planFreeWindows, Linux, iOS, Android
16Opera8.3Free plan$0.33/moAndroid, Browser, iOS, Linux, Mac, Web, Windows
17SPS Browser Pro8.3Free planFreeWindows
18Vivaldi8.2Free planFreeAndroid, Browser, iOS, Linux, Mac, Windows
19Midori Browser8.2No—Windows, Mac, Linux, Android, iOS
20SnowHaze8.2Free planFreeAndroid, Browser, iOS
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Questions about SigmaOS alternatives

What is the best alternative to SigmaOS?

Mozilla Firefox, number 1 in web browsers with a score of 9.7 out of 10. The others here: Brave Browser, Waterfox, Tor Browser and 16 more.

What is the best free alternative to SigmaOS?

Mozilla Firefox is the best-ranked alternative with a free plan. 19 of the 20 alternatives here publish a free plan on their own pricing pages.

Is there an open-source alternative to SigmaOS?

Yes: Mozilla Firefox, Brave Browser, Waterfox and 13 more.

How are these alternatives ranked?

Ranked free-and-open first: a usable free tier and open-source code, then the platforms it runs on and its documentation.