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Mozilla Firefox, Portable Edition Nightly

customizable web browser

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Version 122.0 Alpha 1 Pre for Windows x64, English
54MB download / 210MB installed
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Runs anywhere (cloud, removable, local) without 'installing'. Use the Platform for easy installs and automatic updates.

Also Available: Firefox Stable, Firefox ESR (Extended Support Release), Firefox Developer Edition, Firefox Beta, Legacy versions

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Mozilla Firefox® Portable Edition Nightly Builds are pre-alpha/alpha quality builds of the popular Mozilla Firefox web browser bundled with a launcher as a portable app, so you can take your browser, bookmarks and passwords with you. These builds are intended for testing purposes primarily by extension and web developers. Individual users should use standard Mozilla Firefox, Portable Edition.


App Notes

The nightly release will install alongside a standard Firefox Portable install in a FirefoxPortableNightly directory. From Mozilla: "This is pre-release software: you may encounter compatibility problems with some websites and add-ons."

Download Details

Open Source Initiative
  • Publisher: Mozilla & (John T. Haller)
  • Date Updated: 2023-11-23
  • Date Added: 2004-04-16
  • System Requirements: Windows 10, 11 & WINE (64-bit Only)
  • App License: Open Source (MPL/GPL/LGPL under Mozilla EULA)
  • Source: Firefox, Launcher source included, Installer
  • SHA256 Hash: 9f94e189249cf5d1df35b8a3fbee832c9de6976442bd72781d3e9cffeb9e4d9f (English)

Mozilla®, Firefox® and the Firefox logo are registered trademarks of the Mozilla Foundation and are used under license.