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User Agent Switcher Requires Restart
The User Agent Switcher extension adds a menu and a toolbar button to switch the user agent of a browser.
Element Hiding Helper for Adblock Plus
Fight the text ads! Element Hiding Helper is a companion extension for Adblock Plus meant to make creating element hiding rules easier.
RequestPolicy Continued
Be in control of which cross-site requests are allowed. Improve the privacy of your browsing by not letting other sites know your browsing habits. Secure yourself from Cross-Site Request Forgery (CSRF) and other attacks.
Font Finder Requires Restart
FontFinder is created for designers, developers and typographers. It allows a user to analyze the font information of any element on a page, copy any piece(s) of that information to the clipboard, and perform inline replacements to test new layouts.
Link Properties Plus Requires Restart
Provides extended link properties: size of linked file, last modified time, etc.
DOM Inspector Plus! [dm] Requires Restart
Improved DOM Inspector! [dm version]. Box Model new layout & more data, see screenshot!. Horizontal scroll for Dom-Tree, and some more.
Inspects the structure and properties of a window and its contents.
Tiny JavaScript Debugger
TinyJSD is a JavaScript debugger for privileged code running Mozilla products like Firefox, Thunderbird, SeaMonkey. It serves to debug the application as well as extensions written in JavaScript.
About Add-ons Requires Restart
Adds an About button to extensions, themes, and languages in the Add-ons list.
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
Sidebar Add Custom Tab Requires Restart
Adds an 'add custom tab' option to the Tabs drop-down menu of SeaMonkey's sidebar.
Joomla! Admin Requires Restart
Joomla! Admin brings ease & convenience to your computer/workstation, by providing you with a ready-to-use menu options that balms your repetitive work :) Now, Go to the Administrator page or Duplicate the current tab to a new tab/window in a jiffy!!
Web Server Check Tool Requires Restart
A tool to perform basic checks on web and DAV servers.
Composer Open In Requires Restart
Adds a toolbar button to Composer to open the current file in another editor or browser.
To create your own collections, you must have a Mozilla Add-ons account.