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KeePass Helper
Requires Restart
Adds a hostname, URL, or email account ID to the application's window name (e.g., that of Firefox or Thunderbird) to make it recognizable to password manager utilities like KeePass.
Stylish Tools
Requires Restart
Quicker access to several Stylish features through a toolbar button and/or keyboard shortcuts. Available for Firefox, Thunderbird, and SeaMonkey
Window Master
Functionality for multiple screens and windows. Easily open links in other windows or on other screens, move or merge tabs, and move or merge entire windows. With graphical controls for grid positioning.
Return Receipt Toolbar Button
Requires Restart
Allow you to add a Return Receipt button to mail compose window toolbar.
Add-ons Button
Opens the Add-ons window to perform tasks on your installed Extensions, Themes, Plug-ins and Language packs.
Rikaichan Japanese-Hungarian Dictionary File
Requires Restart
This is a dictionary file add-on for the Rikaichan extension.
Column Reader
Web reader for wide screens and long documents. Read with pleasure in attractive layouts.
Irvine ContextMenu
Safe for Amoled
Kukkuniiaat
Restartless Restart
This 15KB restartless add-on will add a "File" -> "Restart" menu item and a ctrl/cmd + alt + r hotkey to restart Firefox or Seamonkey.
InspectorWidget
Requires Restart
Adds toolbar button and context menus for invoking the DOM Inspector (DOMi) for either chrome or content elements.
No More Install Delay
UPDATE: XPI delay has been removed in Firefox 40!
Disable the install delay in Firefox. New 2.0 version now includes GreaseMonkey scripts!
Unlike similar addons, this works on Firefox 4 and beyond.
Free Memory Button
Page Colors & Fonts Buttons
Adds buttons to toggle the using the default page colors and fonts, and the page defined colors and fonts.
Lightweight Themes Manager
Show Password On Input
Requires Restart
Gives an option to show the master password on input
About Add-ons
Requires Restart
Adds an About button to extensions, themes, and languages in the Add-ons list.
All Menus Button
Show all the menus in a single menu button that can be placed anywhere. Also contains replacement buttons for the default menus.
To create your own collections, you must have a Mozilla Add-ons account.
