About Sync Firefox

Download About Sync

Download About Sync (current and past versions) for Firefox
Latest Version: 0.25.20250227.104629 Updated: a year ago

Ready to install?

About Sync is available to install from Firefox Add-ons Store and for download from this page.
View source code
2,870
Daily users
4.7
21 ratings
0
Total downloads

Available versions

You can find the current and older versions of About Sync here. You can download the archived versions or inspect their source codes.

As a free user, you can download up to 3 latest versions.
Upgrade to download older versions
VersionDownloadSizeDownload countTimestamp
0.25.20250227.104629XPI · ZIP · Source code208.47KB02025-02-27
0.25.20240801.134157XPI · ZIP · Source code290.18KB02024-08-02
0.24.0buildid20240117.092658XPI · ZIP · Source code285.90KB02024-01-22
0.23.0buildid20230922.132817Paid users only285.77KB02023-09-26
0.22.0buildid20230814.090807Paid users only274.44KB02023-08-22
0.21.2buildid20230628.120915Paid users only270.27KB02023-06-30
0.21.0buildid20220714.054802Paid users only249.24KB02022-07-15
0.25.20250227.104629 208.47KB
2025-02-27 · 0 downloads
XPI ZIP Source code
0.25.20240801.134157 290.18KB
2024-08-02 · 0 downloads
XPI ZIP Source code
0.24.0buildid20240117.092658 285.90KB
2024-01-22 · 0 downloads
XPI ZIP Source code
0.23.0buildid20230922.132817 285.77KB
2023-09-26 · 0 downloads
Paid users only
0.22.0buildid20230814.090807 274.44KB
2023-08-22 · 0 downloads
Paid users only
0.21.2buildid20230628.120915 270.27KB
2023-06-30 · 0 downloads
Paid users only
0.21.0buildid20220714.054802 249.24KB
2022-07-15 · 0 downloads
Paid users only

Install XPI file

An XPI file, short for "XPInstall," is a compressed file format used primarily by Mozilla applications, like Firefox and Thunderbird, to distribute and install add-ons or extensions. These files are similar in function to CRX files for Chrome but cater to the Mozilla ecosystem.
  • Simply drag-and-drop the XPI into Firefox to install the add-on.

Install ZIP file

  • Download the About Sync ZIP file.
  • In Firefox browser, go to about:addons to open Add-ons Manager
  • Click on ⚙, Install Add-on From File
  • Select the About Sync ZIP file from step 1. About Sync is now installed on your browser.

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