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Mozilla Firefox Developer Edition, Portable

development web browser

Download from PortableApps.com

Version 145.0 Beta 2 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)Download0051e9d86d89d6b81f194fda31403f5addb4324fc91dcec8e1876ee716617cb9
Chinese (Traditional)正體中文 (繁體)Download0bad531a54f9af529c03adb69e6587da1ee5c04021d1723b8e197a5b10dfa433
EnglishEnglishDownloade43f5ff43ec1be8d0b56147c05307482409466b109915e8e3c1629a9dd723b17
FrenchFrançaisDownload26f492fdcda91055ee2e7ba2185a3d5533b3b6bcac74b41f9d7588ba0e5b1cc5
GermanDeutschDownload4896f767fc4e2af326435717fad30a590a287b929a7c1d1dcc270e8600ce52c3
HungarianMagyarDownload0d34e51315e4a4a07180ba599de67778714a72cc6e0ec61aa4d8c9dfbf2dd173
ItalianItalianoDownload23270d9ee10581fddd4051f9c3272c275d071c4ab4df6c9ee9200b2d9c14f12d
Japanese日本語Downloadccf0d813c4f31c432ecec85cfaf889819d318a20d5b2aa98d07b9461502149e6
PolishPolskiDownloadd92b4bdb06ad0af785d555eb3b1b1aace9a66aa5543fc1c93b47fcb9e545918e
Portuguese (Brazilian)Português (do Brasil)Download0cfaf914d414d1191ebcdf44b55409ba43a83136396e67f1446f9b0b4d196f2f
RussianРусскийDownloadfb7ff8a62046da6744e2d0aca510a899fc61f2c1aa98f3ab1f96b2e5f1e93948
Spanish (International)Español (internacional)Downloadca1e68ee1e48dfa67eb0221064f0f1b129b9929bf94aaae7a582f6756d480275

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: 2025-10-21
  • 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: e43f5ff43ec1be8d0b56147c05307482409466b109915e8e3c1629a9dd723b17 (English)

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