Extensions switcher - Menu for quick extensions control
Mozilla Add-ons - Download Firefox extensions and themes. They’re like apps for your browser. They can block annoying ads, protect passwords, change browser appearance, and more.
SimpleExtManager - A simple menu to enable, disable and access options of extensions.
Tab Auto Refresh - Automatically refresh tabs based on custom time intervals
Addoncrop - Extends the functionality of your web browser
Chrome Extension Downloader - Chrome Extension Downloader is the name of a website dedicated for downloading and Chrome extensions.