Mozilla Firefox, Portable Edition Legacy 52.9.0 (web browser) Released

John T. Haller's picture
Submitted by John T. Haller on July 10, 2018 - 9:23pm is proud to announce the release of Mozilla Firefox®, Portable Edition Legacy 52.9.0. It's the Extended Support Release of the popular Mozilla Firefox web browser bundled with a Launcher as a portable app. It is intended for web developers and extension developers to test against. Individual users should use standard Mozilla Firefox, Portable Edition for everyday use. It's a great way to test your sites and extensions in multiple versions of Firefox. It's packaged in Format so it can easily integrate with the Platform. And it's open source and completely free.

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

Update automatically or install from the portable app store in the Platform.


FirefoxPortable_small.pngMozilla Firefox is a fast, full-featured web browser that's easy to use. It has lots of great features including popup-blocking, tabbed-browsing, integrated search, improved privacy features, automatic updating and more. Plus, thanks to the launcher bundled in the Mozilla Firefox, Portable Edition, it leaves no personal information behind on the machine you run it on, so you can take your favorite browser along with all your favorite bookmarks and extensions with you wherever you go. Learn more about Mozilla Firefox... Installer / Format

Mozilla Firefox, Portable Edition is packaged in a Installer so it will automatically detect an existing installation when your drive is plugged in. And it's in Format, so it automatically works with the Platform including the Menu and Backup Utility.


Mozilla Firefox, Portable Edition Legacy is available for immediate download from the Mozilla Firefox, Portable Edition Legacy 52 homepage. Get it today!

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John T. Haller's picture

As per our Firefox Portable ESR schedule, the Firefox Portable ESR channel will be moving up to 60.x tomorrow evening. The Legacy 52 release above is for users who wish to continue testing or using the legacy version of the ESR channel. This Legacy 52 release will be maintained with any security releases made by Mozilla through September 5 according to their standard Firefox ESR release schedule. Keep in mind that this is the last version of Firefox to support legacy extensions. Any users wishing to continue using it should copy their Data directory from FirefoxPortableESR to this new FirefoxPortableLegacy52 branchy. Please note that once your copy of Firefox ESR is upgraded to 60.x, some files will no longer be compatible with the 52.x branch. You can always sync your critical data via Firefox Sync.

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