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Mozilla Firefox Developer Edition, Portable

development web browser

Download from PortableApps.com

Version 147.0 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)Download2f74fa5df3382d6846256c05ff181d307c2ed965bbbef899e0bab1ee51bcea4c
Chinese (Traditional)正體中文 (繁體)Download5f7122c0c7adfdd44c7b4322b9429bf089015269afa828d2d7c6337cee9d38ec
EnglishEnglishDownloadabb1a529f6fe3738d514edfbe73a15dabdb3fa925c2faea9f5afda83bd00a667
FrenchFrançaisDownloada5073181b31ecbe9eb9e506df16e4dffcada09379d2d202e1050bfdfe3b6fce6
GermanDeutschDownloadc941386c997d784fe6f7113f9a8d6a326d1fa903065c1816e4615695da134e91
HungarianMagyarDownload8b2c463409a7b76c78e28af0ca9d552d079e03b398ed0d3d9c8308cec12c838a
ItalianItalianoDownload8458cb4487022d53b78a4761fff1c641c7c01108d89cc22e6d56c95c484a7251
Japanese日本語Downloada8a852a0c2986598dc82638dc2817a4ad1eb376c78fd5bd6087440eeb719b6ed
PolishPolskiDownloadfa56617582d9f404d2b88f64fd2809e7b2812daee460eb646662dac184ad58c7
Portuguese (Brazilian)Português (do Brasil)Download253317ff72b191eea41d038668fdbc8843e05661c67993134196cdcbda4d2c66
RussianРусскийDownload06d9ce7e8232d1102d976b1c0381f2ddb712d396b9f5caa208c9d0ab16e6d760
Spanish (International)Español (internacional)Download8531c03ccdec3fb9a847e3cab5d2eb10711fb2ffa37b6f9a3333877944be8d21

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: 2025-12-12
  • Date Added: 2014-11-10
  • System Requirements: Windows 10, 11 & WINE (64-bit Only)
  • App License: Open Source (MPL under the Mozilla EULA)
  • Source: Firefox Developer Edition, Launcher source included, PortableApps.com Installer
  • SHA256 Hash: abb1a529f6fe3738d514edfbe73a15dabdb3fa925c2faea9f5afda83bd00a667 (English)

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