Download ProxyMust – Proxy Checker & Manager

Name: ProxyMust – Proxy Checker & Manager
Author: nana.xakep

By: nana.xakep Add-on

Download ProxyMust – Proxy Checker & Manager (current and past versions) for Firefox

Latest Version: 1.0.5 Updated: 14 days ago

Ready to install?

ProxyMust – Proxy Checker & Manager 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 ProxyMust – Proxy Checker & Manager 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
1.0.5	XPI · ZIP · Source code	4.00MB	2026-07-13
1.0.4	XPI · ZIP · Source code	4.01MB	2026-07-07
1.0.3	XPI · ZIP · Source code	4.00MB	2026-06-26
1.0.2	Paid users only	3.97MB	2026-06-21

2026-07-13 · 0 downloads

XPI ZIP Source code

2026-07-07 · 0 downloads

XPI ZIP Source code

2026-06-26 · 0 downloads

XPI ZIP Source code

2026-06-21 · 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 ProxyMust – Proxy Checker & Manager ZIP file.
In Firefox browser, go to about:addons to open Add-ons Manager
Click on ⚙, Install Add-on From File
Select the ProxyMust – Proxy Checker & Manager ZIP file from step 1. ProxyMust – Proxy Checker & Manager is now installed on your browser.