Life & fun · alternatives · 2026

24 alternatives to Firefox Quantum

The newest, fastest version of Firefox yet. 🔥🦊

Firefox Quantum is the newest version of the Firefox web browser, designed to be faster than previous iterations. It is for anyone seeking a high-performance web browser alternative. The browser became available in… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Firefox Quantum launched in 2017; newer entries below may have overtaken it.

1. 1
   Firefox Advance▲166

   Experimental recommendation engine built into Firefox

   2018 · support.mozilla.org · its alternatives →

2. 2
   Quantum JavaScript▲210

   Quantum computing in your browser.

   2020 · quantumjavascript.app · its alternatives →

3. 3
   Firefox Preview▲248

   Test the speed, privacy, and new features of the new Firefox

   2019 · play.google.com · its alternatives →

4. 4
   Firefox UI Fix▲80

   Change back to the previous Firefox tab style

   2021 · github.com · its alternatives →

5. 5
   Firefox Reality▲191

   Mixed Reality for the Open Web

   2018 · support.mozilla.org · its alternatives →

6. 6
   Firefox 157▲146

   A brand new Firefox is here

   18d ago · firefox.com · its alternatives →

7. 7
   Firefox 29▲69

   Firefox UI redesign (Australis)

   2014 · firefox.com · its alternatives →

8. 8
   Restfox – Open source lightweight alternative to Postman▲758

   Last time I posted this it didn't garner much interest. There have been lots of improvements and fixes since the last release. Quick list of features: - Workspaces - Tabs - Nested Folders - Lots of context menus - Response history - Plugins - Runs fully in the browser and runs offline if necessary - Chrome and Firefox extension to bypass CORS restrictions - Desktop builds for all platforms - GraphQL support - Import collections exported from Postman and Insomnia - Simple user friendly interface I built this because I love Insomnia but wanted a portable version that I could run in the…

   2022 · restfox.dev · its alternatives →

9. 9
   Firefox Developer Edition▲139

   Built for those who build the Web

   2014 · firefox.com · its alternatives →

10. 10
    Fast.js – faster reimplementations of native JavaScript functions▲323

    Faster user-land reimplementations for several common builtin native JavaScript functions. - codemix/fast.js

    2014 · github.com · its alternatives →

11. 11
    Motion on Firefox▲133

    Best time and attention manager, now available on Firefox

    2021 · its alternatives →

12. 12
    Glide, an extensible, keyboard-focused web browser▲207

    A Firefox fork with a TypeScript config that lets you build anything.

    2025 · blog.craigie.dev · its alternatives →

13. 13
    Google Willow▲219

    State-of-the-art quantum chip

    2024 · blog.google · its alternatives →

14. 14
    Firefox in WebAssembly▲273

    This is the entire Firefox browser rendering to a element. Gecko, all UI components, and the Spidermonkey JS engine are all compiled and running in WebAssembly. Here are a few things you might find interesting: - This is fully end to end encrypted! We use the WISP protocol for TCP-over-websockets. - There is a novel WASM->JS JIT for experimental site speedup - This port cost over 25k in opus/fable tokens for debugging and JIT research This was just a fun experiment to push the boundaries of WebAssembly. For a more usable "browser in browser" experience, we also built…

    Jul 2026 · developer.puter.com · its alternatives →

15. 15
    Privacy.com for Firefox▲261

    Get a new card for every purchase with just one click

    2017 · privacy.com · its alternatives →

16. 16
    Advanced Tab Manager for Firefox▲94

    Download Grasshopper for Firefox. Advanced Tab Manager

    2023 · addons.mozilla.org · its alternatives →

17. 17
    Waterfox▲126

    The 100% fresh, free-range, ethical browser

    2018 · waterfox.com · its alternatives →

18. 18
    Firefox Focus▲168

    A free, fast and easy to use private browser.

    2016 · blog.mozilla.org · its alternatives →

19. 19
    A Firefox extension to add latency to distracting webpages▲232

    Download DelayWebpage for Firefox. Sets a small delay to certain websites to help you browse more mindfully.

    2020 · addons.mozilla.org · its alternatives →

20. 20
    LT Browser 2.0▲182

    Experience 6X faster responsive web development

    2023 · testmuai.com · its alternatives →

21. 21
    Firebug 2.0 (for Firefox)▲81

    The most popular and powerful web development tool

    2014 · getfirebug.com · its alternatives →

22. 22
    Stay organized with this New tab page for Chrome and Firefox Quantum▲11

    Speed Dial 2 is a new tab page extension for Google Chrome with easy access to your most visited pages, apps, bookmarks and browsing history.

    2017 · speeddial2.com · its alternatives →

23. 23RT
    Rethinking Tabs in Firefox▲127

    2022 · madprops.github.io · its alternatives →

24. 24
    Opera GX Gaming Browser▲137

    The world’s first gaming browser

    2019 · opera.com · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →