Download Old Steam

Name: Old Steam
Author: _marlion_

By: _marlion_ Theme

Download Old Steam (current and past versions) for Firefox

Latest Version: 1.0 Updated: a year ago

Ready to install?

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

View source code

Daily users

5.0

1 ratings

Total downloads

Available versions

You can find the current and older versions of Old Steam 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	XPI · ZIP · Source code	8.21KB	2	2025-09-06

2025-09-06 · 2 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 Old Steam ZIP file.
In Firefox browser, go to about:addons to open Add-ons Manager
Click on ⚙, Install Add-on From File
Select the Old Steam ZIP file from step 1. Old Steam is now installed on your browser.