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Colorific
Colorize entire web pages. Configure themes using sliders and drag-and-drop. Set domain preferences for automatic coloration.
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.
Column Reader
Web reader for wide screens and long documents. Read with pleasure in attractive layouts.
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.
Join-NG
Requires Restart
Join partial messages. Somewhat similar to MS Outlook Express "combine and decode".
Extensor
Quick access to add-on functions from a toolbar panel: Options, (De)Activate, Details, Home page, Review page, Donation page, Uninstall, Restart application.
Flexible Identity
Requires Restart
Selects an identity based on the recipients list when sending an email
ACColorPicker
A full featured color selector tool, to work with colors, and easily find the colors you want.
很方便色取色器,可以页面上直接取色,然后再对颜色进行进一步的调整
PasteHyperlink
Requires Restart
Paste the clipboard contents into the selected text as a hyperlink.
Restart Application Button
Restart Application Button lets you restart your Firefox and SeaMonkey application by a quick toolbar button click.
lolifox - Fierr MOD
Requires Restart
Replaces the error page with a lolifox appearance with additional features.
BOINC Stats 2
Requires Restart
Displays your Total and Recent Average Credits for BOINC distributed computing projects in the status bar.
Active Stop Button
Requires Restart
Stop gif animation with button, context menu or Esc key
To create your own collections, you must have a Mozilla Add-ons account.