Download OTTPRO

Name: OTTPRO
Author: winoffrg

By: winoffrg

Download OTTPRO (current and past versions) for Firefox

Latest Version: 0.5.1 Updated: 3 months ago

Ready to install?

OTTPRO 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 OTTPRO 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
0.5.1	XPI · ZIP · Source code	556.95KB	2026-03-28
0.4.1	XPI · ZIP · Source code	1.01MB	2026-03-08
0.4.0	XPI · ZIP · Source code	1.00MB	2026-03-07
0.3.0	Paid users only	1002.19KB	2026-03-06
0.2.1	Paid users only	987.30KB	2026-02-21
0.2.0	Paid users only	985.21KB	2026-02-07
0.1.2	Paid users only	150.63KB	2025-07-16

2026-03-28 · 0 downloads

XPI ZIP Source code

2026-03-08 · 0 downloads

XPI ZIP Source code

2026-03-07 · 0 downloads

XPI ZIP Source code

2026-03-06 · 0 downloads

Paid users only

2026-02-21 · 0 downloads

Paid users only

2026-02-07 · 0 downloads

Paid users only

2025-07-16 · 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 OTTPRO ZIP file.
In Firefox browser, go to about:addons to open Add-ons Manager
Click on ⚙, Install Add-on From File
Select the OTTPRO ZIP file from step 1. OTTPRO is now installed on your browser.