This catalog contains 93,598 versions of 19,450 Firefox add-ons created by 14,274 developers over the past 15 years using XUL/XPCOM technology before Mozilla decided to ruin the classic extensions ecosystem and go exclusively to WebExtensions.

This add-on has been tested with the following browsers (in alphabetical order): Basilisk RC1+, Firefox ESR 45-52, Firefox 45-58b, Pale Moon 27+, SeaMonkey 2.40+ and Waterfox 55+. In order to install it into Firefox release or beta, you need to disable the extensions signing requirement. Multi-process mode (e10s) is not supported. The installation package is located in the releases section.