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Mozilla Firefox Developer Edition, Portable

development web browser

Download from PortableApps.com

Version 148.0 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)Download1423bce098d46d563a069dbc995b207445b1de2681e0035db2baff75b606303e
Chinese (Traditional)正體中文 (繁體)Downloadc62268b9ae0a7f815e09ba8a81d6e7e43e6120d8a5817728ce06b201fee61bed
EnglishEnglishDownloaddd44d0315f92284ff3990f18d2ad275bb4439126951dda15c4cc3b9de689cc45
FrenchFrançaisDownloadf8c90adb75737b32fc42ffd40ad2ae7b6eb1a784061c9c26c3b940de05c608db
GermanDeutschDownload34e9e81c7aeff527a24bd52825a0d8c502ad478afcbb83cd32da016a21dcad59
HungarianMagyarDownload97227aba2d3749f296d654e2f17eacc275e56827c30b8fa77fec5e1206b0662f
ItalianItalianoDownload59cc7469f277cdc1a97ef5c8de73220a898345ec8a2c576b49ab84ab1d0be456
Japanese日本語Download3b7df9a54c351e1c0eafeff0803217efe267af11a276aa41f1f78b16a0a95c56
PolishPolskiDownload9499202e11fdb8fbe865d0eb4d8df5d577acf7c27bb1696d2a8c76c63ed7a446
Portuguese (Brazilian)Português (do Brasil)Download5bc2524b4fafa200904666aab7077b66cb245fe66b52d72c72084640cc567451
RussianРусскийDownload3cb5d014a342635f1bf9a0114911bf7924b2bb55eeacea79bf8e2ae32c795e0c
Spanish (International)Español (internacional)Downloadb22054064c5e0db30e778d23339a2ac9f18bad3e02f39fba9926604266a69be6

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: 2026-01-17
  • 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: dd44d0315f92284ff3990f18d2ad275bb4439126951dda15c4cc3b9de689cc45 (English)

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