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Mozilla Firefox Developer Edition, Portable

development web browser

Download from PortableApps.com

Version 144.0 Beta 1 for Windows x64, English
89MB download / 315MB installed
Notes | All Languages | Antivirus Scan | 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 Beta, Firefox Nightly, Legacy versions

Make a Donation - Support PortableApps.com development & hosting, Make a Donation - Support Firefox Developer Edition development

Description

Mozilla Firefox is a fast, full-featured web browser that's easy to use. The Developer Edition adds in debugging and IDE tools as well as a unique theme to the standard beta channel of Firefox.

Learn more about Firefox Developer Edition...

Localizations

LanguageLinkSHA256 Hash
Chinese (Simplified)中文 (简体)Download41e827e5bd840f162adc0d6dc92ff2bf61a88fad10a4dd96629c48b4835823d2
Chinese (Traditional)正體中文 (繁體)Download60150f80942a56c6e10b8c30100de3d6fdbc91ea717a6754fd7442bde2021e93
EnglishEnglishDownload77e1e391e1a07b315f47fc50620edcd8de381d2c3dd27dd82e3bc5eeba024a2a
FrenchFrançaisDownload782867cfc0d74d42174a5f6909c8750c570f24d6e4ba3476d7b3ef85abb9e968
GermanDeutschDownloadaf41702b6984d3f39b9c580121aaa24daa45d5aec9dd4adc7591a5233cc78bcc
HungarianMagyarDownload9b0287c11a5d1b54c20b4ad6f874a5a2346470a4b2e0f63978f2ecc78aaf27d0
ItalianItalianoDownloadb075af6d18be85349a9062cce775e0c1ad3722fe494fc19ff14c7026b42f9e46
Japanese日本語Download7e0e081b7ee43f47433bf4671b8e72f8f01d08f91bac85307b0dde9f1879710d
PolishPolskiDownloade1cab1d046b558b856a4a8a1d39d511603b6c23c321c7c3c140421774ba8f27a
Portuguese (Brazilian)Português (do Brasil)Download066fae3487ee671ebc5990a022c155e1c93df015878abf971e031be4cd5e2cd5
RussianРусскийDownload548b3918d0514e57d8966d6e1b8f67bb0ec60064f30a457a126556ba84cd4b9e
Spanish (International)Español (internacional)Download48541078bd7f15ad9c9682c9310b10128a210596973f9134e9941a0557db46ae

App Notes

The developer release will install alongside a standard Firefox Portable install in a FirefoxPortableDeveloper directory. Note that PortableApps.com will release one version for each major version (example: 99b1 but not 99b2). For updates within each major release, use the internal updater. 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: 2025-09-16
  • Date Added: 2014-11-10
  • System Requirements: Windows 10, 11 & WINE (64-bit Only)
  • App License: Open Source (MPL/GPL/LPGL under Mozilla EULA)
  • Source: Firefox Developer Edition, Launcher source included, PortableApps.com Installer
  • SHA256 Hash: 77e1e391e1a07b315f47fc50620edcd8de381d2c3dd27dd82e3bc5eeba024a2a (English)

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