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QuickFolders (Tabbed Folders)

The "Swiss army knife" of folders. Turn your favorites into tabs - open folders and subfolders, move mails without scrolling around or searching. powerful + easy.

See new mail at a glance after automatic filtering - supports quickFilters addon!

Rated 5 out of 5 stars (190)
14,722 users

LightningButton Requires Restart

Toolbar-Buttons for Lightning; advances the feature to get rid of the tabbar.

Rated 4 out of 5 stars (23)
3,087 users

Toolbar Buttons

Adds toolbar buttons to the customize toolbar window in several programs including Firefox, Thunderbird and SeaMonkey. Some of the buttons make commonly preformed actions quicker, others add new functionality.

Rated 4 out of 5 stars (372)
307 users

Custom Buttons Requires Restart

Gives a possibility to create custom toolbarbuttons...

Rated 4 out of 5 stars (125)
21 users

AVIM Requires Restart

Vietnamese-language input method editor (IME). Type diacritics directly into any Web page, Web app, or dialog box. Convenient, comprehensive, secure.
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Bộ gõ tiếng Việt cho phép đặt dấu trực tiếp vào bất kỳ trang Web, ứng dụng Web, hộp thoại.

Rated 5 out of 5 stars (41)
1 user

Right Encoding Requires Restart

Adds the Character Encoding menu to the context menu

Rated 4 out of 5 stars (18)
15 users

Compact Menu 2 Requires Restart

Add a compact menu button to the navigation toolbar, and hide the menu bar.

Rated 4 out of 5 stars (326)
20 users

Extra Format Buttons Requires Restart

Adds a font size (in pixels), strikethough, subscript and superscript buttons to Thunderbird's Compose Window.

Rated 4 out of 5 stars (19)
116 users

Rise of the Tools

Moves the toolbar back above the tabbar.

Rated 5 out of 5 stars (66)
283 users

Color Text Compose Buttons Requires Restart

Adds Text Color Buttons in Compose Toolbar and More: Pixel FontSize, Strikethough, Sub & Superscript, Lower & UpperCase. Also provide Tools: Insert iframe, Launch MathType, Maths & Greek Symbols, Load Template Variables and Duplicate Compose Window.

Rated 4 out of 5 stars (23)
105 users

Filter Button

Allows to add a button to the message header view toolbar that shows all filters that match the selected message, including manual and disabled filters. A click on the button allows to select a filter to run.

Rated 4 out of 5 stars (27)
862 users

Yelp Search Toolbar Requires Restart

YELP SEARCH TOOLBAR, NOW IT MORE EASY TO REVIEW & TALK ABOUT WHAT'S GREAT - AND NOT SO GREAT - IN YOUR AREA

Not yet rated
0 users

Change Referer Button Requires Restart

Button in the toolbar/status bar to change referer value.

Rated 5 out of 5 stars (17)
3 users

Phoenity Buttons

Adds some toolbar buttons using phoenity icons.

Rated 4 out of 5 stars (16)
4,378 users

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.

Rated 4 out of 5 stars (204)
13 users

Sort and Search Customization Dialogs Requires Restart

Sort and search for buttons in (any) toolbar customization dialog

Rated 5 out of 5 stars (18)
19 users

Character Palette Requires Restart

Firefox toolbar for selecting strange characters that are not on my keyboard.

Rated 4 out of 5 stars (16)
1 user

XUL/Migemo Requires Restart

This provides dictionary-assisted search (Migemo search) and regular expression powered search for "find in this page" and other features.

Rated 4 out of 5 stars (49)
0 users

Dybutar

Dynamic creation of bookmark-style toolbar buttons which you can customize.

Rated 5 out of 5 stars (12)
1 user

QuickFilterPlus

Adds personal filters to quickfilter toolbar

Rated 4 out of 5 stars (1)
1 user