Download Medusa Adder

Name: Medusa Adder
Author: Quantum Koala

By: Quantum Koala

Download Medusa Adder (current and past versions) for Firefox

Latest Version: 1.0.3 Updated: 7 months ago

Ready to install?

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

View source code

Daily users

—

No ratings yet

Total downloads

Available versions

You can find the current and older versions of Medusa Adder 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	Download count	Timestamp
1.0.3	XPI · ZIP · Source code	21.43KB	0	2025-11-09

2025-11-09 · 0 downloads

XPI ZIP Source code

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