Miscellaneous

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Environment Proxy

Sets proxy settings from environment variables.

Rated 4 out of 5 stars (8)
1,713 users

Filter Button Thunderbird

Adds a button to run...

Rated 3 out of 5 stars (14)
947 users

CuteMenus - Crystal SVG

Note from Mozilla: This add-on has been discontinued. Try Menu Icons Plus instead.

Adds icons to all menus along with some other features...

Rated 4 out of 5 stars (102)
12,167 users

Is It Compatible?

**Notice: This addon is no longer maintained.** Are your addons compatible with the next version of Firefox? Find out straight from the Addons window! **Version 0.6.0 is available from the Versions page, it was never approved by AMO**

Rated 4 out of 5 stars (38)
3,489 users

Copy Plain Text

Copies text without formatting...

Rated 4 out of 5 stars (185)
2,601 users

Free/Busy

Publish free/busy calendar file (*.ifb) via ftp or to a file. View other people's free/busy info in meeting organizer window. Integrate Thunderbird and Outlook calendars without Exchange server.

Rated 3 out of 5 stars (8)
1,517 users

Personas Rotator

Personas Rotator is a new companion for Personas Firefox add-on to change over 65000+ skins periodically on Firefox. What Will Your Browser Wear Now?

Rated 4 out of 5 stars (78)
20,319 users

Rainbowpicker

Pick any color of the...

Rated 4 out of 5 stars (15)
1,165 users

Console²

Console² (pronounced Console Squared or Console Two) replaces the JavaScript Console with what could be the next generation Error Console. From v0.5 includes the Console Filter extension previously available separately from the Console² website.

Rated 5 out of 5 stars (45)
18,214 users

URL Link

URL Link is a small Firefox and Thunderbird extension that allows you to select a non-URL in a mail/news message or web-page, and open it in a browser window.

Rated 5 out of 5 stars (43)
23,880 users

Timestamp

Inserts the current date/time into a message or an input field in the browser.

Visit my Timestamp site for recent versions and news.

Rated 4 out of 5 stars (18)
1,159 users

Open As Webfolder

Open pages and links in Windows WebFolder WebDAV client (similar to "open in Webfolder" checkbox in IE's open...

Rated 3 out of 5 stars (9)
3,077 users

Gmail Twitter & Facebook Signature - WiseStamp

Using Gmail? Google mail? Yahoo? Hotmail or Thunderbird? Empower your email with your Twitter, Facebook, LinkedIn, Youtube, eBay item and many more apps...Create a powerful & effective email signature that dose the job ☛ Get it now!

Rated 4 out of 5 stars (281)
50,855 users

Update Notifier

Note from Mozilla: This add-on has been discontinued. Try Add-on Update Checker instead.

Notifies you when updates are available for your extensions and themes.

Rated 5 out of 5 stars (161)
27,842 users

DOM Inspector Plus! [dm]

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.

Rated 4 out of 5 stars (1)
1,068 users

Check for Updates in Help Menu

Adds a 'Check for Updates' entry to the Help menu.

Rated 5 out of 5 stars (15)
5,264 users

Auto Compress File

Compressor for attachment files. All platforms are supported (Windows, Linux and Macintosh).

Rated 5 out of 5 stars (14)
5,514 users

Custom Buttons²

The Custom Buttons² Firefox extension provides the code base support necessary to create, maintain, import, and export custom toolbar buttons. The buttons can perform just about any task, with a large number of buttons already available on the exte...

Rated 4 out of 5 stars (73)
1,495 users

Grocery List Generator

The GLG (Grocery List Generator) is a helpful little tool to store your recipe-ingredients and other groceries you need regularly. It creates a well-organized grocery list to help make your grocery shopping as easy as possible.

Rated 4 out of 5 stars (24)
1,889 users

JavaScript Object Examiner

Display JavaScript object methods and properties for any available scope.

Rated 5 out of 5 stars (1)
3,257 users