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Mozilla Firefox, Portable Edition Nightly

customizable web browser

Download from PortableApps.com

Version 142.0a1 for Windows x64, English
64MB download / 241MB installed
Notes | All Languages | Antivirus Scan | Online Installer | Details

Runs anywhere (cloud, removable, local) without 'installing'. Use the PortableApps.com 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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Description

Mozilla Firefox® Portable Edition Nightly Builds are pre-alpha/alpha quality builds of the popular Mozilla Firefox web browser bundled with a PortableApps.com 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.

Learn more about Firefox...

Localizations

LanguageLinkSHA256 Hash
Chinese (Simplified)中文 (简体)Download4ac8144a47462d5f2b71820291615f4b5730191ed807010ea348361a38b9df90
Chinese (Traditional)正體中文 (繁體)Downloadc557c2051a2437b90bdefb9ffcce7a680b66eca4691cd549f52473ce3bf44548
EnglishEnglishDownload7d6f25aef4c22fc5e26d96115ea5b8f6db6f140c48e88ef28978effff73864a3
FrenchFrançaisDownloadcc0149adcaa91743b216753b1bef51a8a7ce78b56862188faf386db912ce2b99
GermanDeutschDownload627a69854fd2e99c6fdb19e9a68625a9d283f77dc6270053348b744723b4a7da
HungarianMagyarDownloadf3c56cb0595f15b5a4de31090966c267a0285cbffd639bd8cb508b682ee3c8d9
ItalianItalianoDownloadc0bb64e106ce93416308c845888336b42e832edbc43d61bf46caa2fa61a4ac6e
Japanese日本語Downloadb03b65a2633299fc32d68147a479327027b95f64f4d33f5150106918814233c1
PolishPolskiDownloadab8d3dc1a1584696a5a905c8d802d2edcae7d5256c207074b0bb7bb34c909e52
Portuguese (Brazilian)Português (do Brasil)Download203c94772038ac8b15c0ac524859bda999e6c43c0a296fd41b441d6d581ea2cc
RussianРусскийDownloadfb0dd4b7e14c0f4334122b56e9eea2edf7e3bbb4cda64b1787029590020e9881
Spanish (International)Español (internacional)Downloade568dae83de82e5fee57dfd5486ef418281f54127b6449443a4b83ea3d35016d

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."

Support

For help with this app, please see the following:

Download Details

Open Source Initiative Approved License
  • Publisher: Mozilla & PortableApps.com (John T. Haller)
  • Date Updated: 2025-06-25
  • 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, PortableApps.com Installer
  • SHA256 Hash: 7d6f25aef4c22fc5e26d96115ea5b8f6db6f140c48e88ef28978effff73864a3 (English)

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