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Mozilla Firefox, Portable Edition Nightly

customizable web browser

Download from PortableApps.com

Version 140.0a1 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)Download39068b3c643e262f192c9beb16245339da3771991dbeb85f1b840d43dd59838b
Chinese (Traditional)正體中文 (繁體)Download628af448503d4b4dc0181c0cb4185acc3d5116966d2ecc6c1ae5aa3f41a5b3a1
EnglishEnglishDownload23090f4ece34c72c0518eeca566e451e662661d71483fa26702cb4180f01d3ee
FrenchFrançaisDownloadefb7919b46ed8e0ceb0b83ad22bcdf59270bf169b7e27614fea4b2dc19b103f8
GermanDeutschDownload35124e744d54ca8c95d4481ae653ba742d262ed8e9112e3a00477552babf4f25
HungarianMagyarDownloadf99f06fae53ce972a5a9b3d09caabf3e51b4ce6d5ca8577f3b1f07c0adc16bf4
ItalianItalianoDownload563095d6ebce7772305fbd8a1797f8b9c86aeb7fea112e5896e827b66da678f6
Japanese日本語Downloada363ffec104f6608a966b01da54710e799e39c31139df6fdf82326729c5b81b1
PolishPolskiDownload4a1344567ca468d77e60215f0fb80420d2721184df226eb5ccae720847eb9b19
Portuguese (Brazilian)Português (do Brasil)Downloadced347dbb9bc00aa2e23d0516e70ac42c909eecc50a77ad4c54d76fb5f2d18a1
RussianРусскийDownload4bbd5414ae0e4ef0c29fb11b711cad96b34dc70d61e1742092d6bc538363f91d
Spanish (International)Español (internacional)Downloadb7136bb1d1fb760bd0cc0d26f039ad030cf18150a77ed093f77f785b4aa576d3

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: 2025-04-30
  • 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: 23090f4ece34c72c0518eeca566e451e662661d71483fa26702cb4180f01d3ee (English)

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