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Mozilla Firefox Developer Edition, Portable

development web browser

Download from PortableApps.com

Version 142.0 Beta 1 for Windows x64, English
68MB download / 240MB 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)Download244f06b1a85413635c884341f0ae0b66fea000b7f4e6676a85e15ccac188e0fa
Chinese (Traditional)正體中文 (繁體)Download1611ed5a43c90031ac584b5f655fc933abe7c98cf7005b0d14ed666709031bcd
EnglishEnglishDownload3f153f056a10dbeb8b06a32f49c6b3ff6bce2bc384af2806c3eb062839fe8aa6
FrenchFrançaisDownloadb2783f389a54c875449a893dbc738703518e157b122b7cc9f6ce2ad47f7761eb
GermanDeutschDownloadfcf2e7d39b432918831a0172a46b9425a726c936b56f10ef32a51353c9152f9b
HungarianMagyarDownload3ec70bc3401c88366fe723490954c3b799a18b20e59a02c3a0d7b2dde9e92b33
ItalianItalianoDownloadcba9b776ed7848f6fbae175a3c412025dbc193980282cab739ce20b05c38e9aa
Japanese日本語Downloadb34fcda4c6f619bec09356d410ffdb9368e6fbb43b730089bcf66b46b49106a7
PolishPolskiDownloadc079887f863d2911d84ed48e741b4cf4d6cb3a8e95927edccd6643f4f9b03f30
Portuguese (Brazilian)Português (do Brasil)Downloadac92d395c59c2b0bc94d882e5e04f5bb2cf1397e791bb778487fbd7f8777ee57
RussianРусскийDownload198bbe2a5696bcd75a9d90d4464b86c807d33bc0cb0f2c4327cd963ac6f3abcc
Spanish (International)Español (internacional)Download2a9eb65f063396e2f5a0c68f509ee66e54b9ef20fd3049dd341fb3ba62f6e823

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: 2025-07-29
  • 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: 3f153f056a10dbeb8b06a32f49c6b3ff6bce2bc384af2806c3eb062839fe8aa6 (English)

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