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 PortableApps.com 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.
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 PortableApps.com will release one beta version for each major version (example: 40 Beta 1 but not 40 Beta 2). For updates within each major release, use the internal updater.
Version 51.0 Beta 1 for Windows, Multilingual
17MB download / 77MB installed (Details)
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 Aurora is now Firefox Developer Edition
Version 53.0 Alpha 1 for Windows, Multilingual
~100MB download / ~200MB installed
This build contains the 32-bit and 64-bit versions in a single package and will automatically run the correct one for each machine just like Firefox Stable, Beta, and Developer Edition. If you were using the old 64-bit only nightly build, rename your directory from FirefoxPortableNightly64 to FirefoxPortableNightly and upgrade.
Though there is no support specifically for this test release, the pages for Firefox Portable Support should help.
- Publisher: PortableApps.com (John T. Haller) and Mozilla
- System Requirements: Windows XP/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.