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Mozilla Firefox Developer Edition, Portable

development web browser

Download from PortableApps.com

Version 151.0 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)Download3e0b9a227a854b05ae88cb5babeb8d575fac71b044657d555a102189770ebd62
Chinese (Traditional)正體中文 (繁體)Downloadade5ff13b8f2a21720c940601bdf621ee5c3739dc79ab020b1901dde99cb770f
EnglishEnglishDownloadcad55c9f64b797604fa4c02a8425ffa981d4fd0c55fc388f03bca4da880c9baa
FrenchFrançaisDownloadebfbd1dd833329b32f854a2d2798d297da51eceb2c27265a5b3d63425be4af8b
GermanDeutschDownload9d8b93a5f7e94a62c5d93fa4a68b50883ed8bd3f1580bc9369f113dc6bfaeca5
HungarianMagyarDownload6caff101100f3783f6e7c6a5fbcc4bf05c7d6bb71e79a4224bc1bd543783d5c6
ItalianItalianoDownload18b89d187b2b7ecbf5f5a2f32ee300614cc4c275ce3f2d2079ec10580baeb643
Japanese日本語Downloadb27a39fa7381313d63ac4604453961878b7a564650fcde7e215e07d43f4b99e7
PolishPolskiDownloadb54b4ac9b2f591a8cb5b121c9285d438ca02a156ccc34b3c2d4892502e550a6e
Portuguese (Brazilian)Português (do Brasil)Download63771db5d605d6426be8b1a06287c45396b91dfb9db99285071d10037c159072
RussianРусскийDownload79a65f6fe2fae882c6a2b76838d655e16d6c95c7f6e418f2ce663bd437989946
Spanish (International)Español (internacional)Download885fa507e9aeeeb8dd621cd4cf56cb1e417d59cea0dc3550319d15b82bd94048

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: 2026-04-28
  • 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: cad55c9f64b797604fa4c02a8425ffa981d4fd0c55fc388f03bca4da880c9baa (English)

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