Tree Style Tab, Show tabs like a tree.
Web Extension for saving a copy of complete web page in a single file
A web extension for Pixiv
Rapid Page Manipulator
Firefox and Thunderbird addon to manage settings using AD Group Policy
Passively audits the security posture on current page for your browser
Get in an immediate screenshots of your web pages for Firefox
Open GitHub notifications with shortcuts in Gmail
An extension to push Firefox configuration settings using GPO
iStart, next generation new tab page.