Download Hermes Sync

Name: Hermes Sync
Author: Mauricio Silva

By: Mauricio Silva Add-on

Download Hermes Sync (current and past versions) for Firefox

Latest Version: 0.17.0 Updated: a day ago

Ready to install?

Hermes Sync is available to install from Firefox Add-ons Store and for download from this page.

View source code

Available versions

You can find the current and older versions of Hermes 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

Version	Download	Size	Timestamp
0.17.0	XPI · ZIP · Source code	148.03KB	2026-07-14
0.16.2	XPI · ZIP · Source code	143.87KB	2026-07-03
0.16.1	XPI · ZIP · Source code	143.76KB	2026-07-03
0.16.0	Paid users only	160.41KB	2026-04-27

2026-07-14 · 0 downloads

XPI ZIP Source code

2026-07-03 · 0 downloads

XPI ZIP Source code

2026-07-03 · 0 downloads

XPI ZIP Source code

2026-04-27 · 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 Hermes Sync ZIP file.
In Firefox browser, go to about:addons to open Add-ons Manager
Click on ⚙, Install Add-on From File
Select the Hermes Sync ZIP file from step 1. Hermes Sync is now installed on your browser.