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Mozilla Firefox, Portable Edition Beta

Mozilla Firefox, Portable Edition Test Versions are test versions of the popular Firefox web browser or test versions of the Gecko layout engine bundled with a Launcher as a portable app that are being made available for testing purposes only, and are intended for web application developers and our testing community. For everyday use, please use Mozilla Firefox, Portable Edition.

You can also install the latest nightly build.

Mozilla Firefox, Portable Edition 59.0 Beta 4

The current Firefox Beta release. From Mozilla: "This is pre-release software: you may encounter compatibility problems with some websites and add-ons." Note that will release one beta version for each major version (example: 56 Beta 1 but not 56 Beta 2). For updates within each major release, use the internal updater.

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Install Note: This will install alongside a Mozilla Firefox, Portable Edition installation by default in a FirefoxPortableTest directory. The installer supports upgrading existing stable installations by manually changing the install location, though this is not recommended.

Mozilla Firefox, Portable Edition 59.0 Beta 4 Localizations

Mozilla Firefox, Portable Edition Aurora Discontinued

Mozilla Firefox Aurora is no longer available. An alternate packaging of Firefox beta versions is available as Firefox Developer Edition

Mozilla Firefox, Portable Edition Nightly

The nightly builds have been moved to their own page: Mozilla Firefox, Portable Edition Nightly Builds


osi_certified.pngThough there is no support specifically for this test release, the pages for Firefox Portable Support should help.

Download Details

  • Publisher: (John T. Haller) and Mozilla
  • System Requirements: Windows Vista/7/8/10, Wine on Linux/UNIX
  • License: Free / Open Source (Launcher: GPL, Firefox: MPL/GPL/LPGL under Mozilla EULA)
  • Source Code: Launcher source (included), Firefox

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