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Mozilla Firefox Developer Edition, Portable

development web browser

Download from PortableApps.com

Version 146.0 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)Downloadb61759c13f9f18bfc92c6cfb97a2843cf547e1617245d9369e30c2f4595da6ee
Chinese (Traditional)正體中文 (繁體)Download92e6e8fd0886ec89c8026839e39d1e3e29e09124acc3d4fa766c5431a461e2b5
EnglishEnglishDownloadc93463fa687a81cb4fdc36b4205cfaf4195b9fd58e115740aa39013309823333
FrenchFrançaisDownload825192b11ebf3bbb20c345ea159152197287497c4c0341665de5f9b8b4e73c7d
GermanDeutschDownload40accb1dbda5f94db87b42eeaa4c6b6387b6dc408e12e55590f44864b7e32ed3
HungarianMagyarDownload3b5e79845b56f0c216d354ac0ea3fb6cb5397a118dd4fb3ddd47dbb76775867d
ItalianItalianoDownloadc3c20cfd5745ae07d002f56cc0554fd4f0fce27e231f70aaab6be1f2f5218b33
Japanese日本語Download3b7bbc28debce3484338947b3b65b7fdc45c774c0e4eab5613efd1a3a6a00851
PolishPolskiDownloade2f7a288965308d17aec440b0fe3921660a8352b0ed02ba7f94f6da80e0279c8
Portuguese (Brazilian)Português (do Brasil)Download5990882a440f139bfe2aff41de6008459d03c952a1f600939f2fe2b91254cec1
RussianРусскийDownloada0426f06c0e4961235868347feb9177ba7b874a937fc1a121aa1debb985fb6df
Spanish (International)Español (internacional)Downloadca426bff7a20fc4344d00b7d60fa608eb4c06e7d9d3eba3f0eecda4fd567421f

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: 2025-11-19
  • 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: c93463fa687a81cb4fdc36b4205cfaf4195b9fd58e115740aa39013309823333 (English)

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