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Best Firefox Developer Tools Alternatives in 2026

Updated

20 platforms from web browsers ranked against Firefox Developer Tools on the same published basis.

  1. 1
    Brave Browser Free plan Open sourceAndroidiOSLinuxMacWin $2.50/mo8.4
    Firefox Developer Tools vs Brave Browser
  2. 2
    Mozilla Firefox Free plan Open sourceAndroidextensioniOSLinuxMac Free8.3
    Firefox Developer Tools vs Mozilla Firefox
  3. 3
    Kameleo Free plan AndroidapiextensioniOSLinux €3.75/mo8.3
    Firefox Developer Tools vs Kameleo
  4. 4
    Waterfox Free plan Open sourceAndroidextensionLinuxMacWin $5/mo8.2
    Firefox Developer Tools vs Waterfox
  5. 5
    Mullvad Browser Free plan Open sourceLinuxMacWin Free8.2
    Firefox Developer Tools vs Mullvad Browser
  6. 6
    Tor Browser Free plan Open sourceAndroidLinuxMacWin Free8.1
    Firefox Developer Tools vs Tor Browser
  7. 7
    LibreWolf Free plan Open sourceLinuxMacWin Free8.1
    Firefox Developer Tools vs LibreWolf
  8. 8
    Helium Browser Free plan Open sourceWinMacLinux Free7.7
    Firefox Developer Tools vs Helium Browser
  9. 9
    Aloha Browser Free plan Open sourceWinMacLinuxiOSAndroid Free7.7
    Firefox Developer Tools vs Aloha Browser
  10. 10
    Google Chrome Free plan AndroidextensioniOSLinuxMac Free7.6
    Firefox Developer Tools vs Google Chrome
  11. 11
    Microsoft Edge Free plan AndroidextensioniOSLinuxMac Free7.6
    Firefox Developer Tools vs Microsoft Edge
  12. 12
    Opera Free plan AndroidextensioniOSLinuxMac $0.33/mo7.4
    Firefox Developer Tools vs Opera
  13. 13
    Vivaldi Free plan AndroidextensioniOSLinuxMac Free7.4
    Firefox Developer Tools vs Vivaldi
  14. 14
    DuckDuckGo Browser Free plan AndroidiOSMacWin $8.33/mo7.4
    Firefox Developer Tools vs DuckDuckGo Browser
  15. 15
    Avast Secure Browser Free plan extensionWeb $3.33/mo7.4
    Firefox Developer Tools vs Avast Secure Browser
  16. 16
    BrowserOS Free plan Open sourceMacWinLinux Free7.4
    Firefox Developer Tools vs BrowserOS
  17. 17
    Safari Free plan extensioniOSMac Free7.3
    Firefox Developer Tools vs Safari
  18. 18
    Comet Free plan AndroidiOSMacWin Free7.3
    Firefox Developer Tools vs Comet
  19. 19
    IronFox Open sourceAndroid 7.3
    Firefox Developer Tools vs IronFox
  20. 20
    ungoogled-chromium Free plan Open sourceWinMacLinuxAndroid Free7.3
    Firefox Developer Tools vs ungoogled-chromium

Firefox Developer Tools alternatives compared

#PlatformScoreFree planFromRuns on
1Brave Browser8.4Free plan$2.50/moAndroid, iOS, Linux, Mac, Windows
2Mozilla Firefox8.3Free planFreeAndroid, Browser, iOS, Linux, Mac, Web, Windows
3Kameleo8.3Free plan€3.75/moAndroid, API, Browser, iOS, Linux, Mac, Web, Windows
4Waterfox8.2Free plan$5/moAndroid, Browser, Linux, Mac, Windows
5Mullvad Browser8.2Free planFreeLinux, Mac, Windows
6Tor Browser8.1Free planFreeAndroid, Linux, Mac, Windows
7LibreWolf8.1Free planFreeLinux, Mac, Windows
8Helium Browser7.7Free planFreeWindows, Mac, Linux
9Aloha Browser7.7Free planFreeWindows, Mac, Linux, iOS, Android
10Google Chrome7.6Free planFreeAndroid, Browser, iOS, Linux, Mac, Web, Windows
11Microsoft Edge7.6Free planFreeAndroid, Browser, iOS, Linux, Mac, Web, Windows
12Opera7.4Free plan$0.33/moAndroid, Browser, iOS, Linux, Mac, Web, Windows
13Vivaldi7.4Free planFreeAndroid, Browser, iOS, Linux, Mac, Windows
14DuckDuckGo Browser7.4Free plan$8.33/moAndroid, iOS, Mac, Windows
15Avast Secure Browser7.4Free plan$3.33/moBrowser, Web
16BrowserOS7.4Free planFreeMac, Windows, Linux
17Safari7.3Free planFreeBrowser, iOS, Mac
18Comet7.3Free planFreeAndroid, iOS, Mac, Windows
19IronFox7.3No—Android
20ungoogled-chromium7.3Free planFreeWindows, Mac, Linux, Android
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Questions about Firefox Developer Tools alternatives

What is the best alternative to Firefox Developer Tools?

Brave Browser, number 1 in web browsers with a score of 8.4 out of 10. The others here: Mozilla Firefox, Kameleo, Waterfox and 16 more.

What is the best free alternative to Firefox Developer Tools?

Brave Browser 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 Firefox Developer Tools?

Yes: Brave Browser, Mozilla Firefox, Waterfox and 8 more.

How are these alternatives ranked?

Ranked on what each maker publishes, open and connectable first: a public API, open-source code, the depth of its documentation and a free tier to try it on. Model lists are sorted by the figure in their title, exactly as each provider publishes it.