see also collections For Checking Compatibility of Addons/Extensions (add-ons) and For Managing Plugins (plug-ins)
AiOS lets you open various windows as sidebar panels, and quickly switch between them. So it put an end to the window chaos! In addition to bookmarks and history it opens dialogues such as downloads, add-ons and more in the sidebar.
FEBE (Firefox Environment Backup Extension) allows you to quickly and easily backup your Firefox extensions. In fact, it goes beyond just backing up -- It will actually rebuild your extensions individually into installable .xpi files.
Collector's Note Zippy Extension Packager is an alternative to this Add-on Extension
Help make Firefox better. The Add-on Compatibility Reporter enables you to report if the Firefox add-ons that you're using are working properly.
The Add-ons Manager slims down!
This add-on reduces the height of entries in the Add-on Manager, so you can display more of them at a time.
Add more items to Add-ons Manager context menu.
Adds Tools menu item to check Add-ons for updates. Includes toolbar icon.
CLEO (Compact Library Extension Organizer) is a Firefox extension that works with FEBE* to package any number of extensions/themes into a single, installable .xpi file.
Collector's Note Requires FEBE add-on to work
The Ultimate Webpage Enhancer! Instantly add many tweaks to any webpage including: Ad block, flash block, video download, remove delays, tooltip translation, link checker, rounded corners, auto pagerize, and more. A must have for all web users.
Import/Export extension preferences
Collector's Note Companion to FEBE to save add-on preferences
Keep your favorite Extensions synced with all your computers.
Protect Firefox with Extension Defender, scan your extensions for unwanted or malicious apps. Install Extension Defender and stay protected.
Adds extension options dialogs to the Tools or Titlebar menu and includes toolbar icon.
This extension adds a button ("Dump list") to the Add-ons window. When this button is pressed, a new window is opened with the list of installed extensions, themes or plugins...