Mozilla QA Companion is the easiest way to get involved in the Mozilla QA community. This extension allows you to find bugs in Mozilla products by running simple tests within the browser. Helping out doesn't take up much of your time, doesn't require any special skills, and helps to improve Mozilla products like Firefox and Thunderbird.Requirements:

Ссылка: https://addons...US/firefox/downloads/file/42201/mozilla_qa_companion-0.1.18-fx.xpi