Extensions by Name

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quickFilters Requires Restart

Quickly generate mail filters on the fly, by dragging and dropping mails and analyzing their attributes. Create a filter in less than 10 seconds, it's as easy as: drag, click, click.

By popular demand, supports SORTING filters alphabetically.

Rated 5 out of 5 stars (26)
14,168 users

QuickFolders (Tabbed Folders) Requires Restart

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 (116)
28,056 users

QuickNote Requires Restart

A simple note-taking extension.

Rated 5 out of 5 stars (179)
30,792 users

QuickPasswords Requires Restart

Retrieve your Passwords the quick way! Never retype or display your secure passwords on screen anymore - put the password where you need it - the login form or the clipboard.

Now also includes SSO change (multi-domain pw) and Backup + Restore.

Rated 5 out of 5 stars (50)
5,984 users

Quitomzilla Requires Restart

Quitomzilla helps you quit smoking while you surf the web or wait for new emails, showing the cigarettes, money and time you have saved since you quit...

Rated 5 out of 5 stars (18)
352 users

Quote Colors Requires Restart

Quote Colors allows you to select text and background colors of different quote levels which are applied when reading or printing mail/news messages. Additionally, you can choose between graphical and traditional plain text quoting display mode.

Rated 4 out of 5 stars (44)
15,435 users

QuoteCollapse Requires Restart

Collapse and expand quotes. Please see the extension homepage for...

Rated 4 out of 5 stars (26)
10,418 users

Rai Smooth Streaming Player (raismth) Requires Restart

Rai.tv live channels, vod and replay contents w/o *light (Silverlight/Moonlight)

Rated 5 out of 5 stars (46)
3,320 users

Rainbowpicker Requires Restart

Pick any color of the...

Rated 4 out of 5 stars (19)
711 users

Random Theme Switcher Requires Restart

This extension switches your themes at random.

Rated 4 out of 5 stars (7)
71 users

RC Print Requires Restart

Adds a "Print" option to the Right-Click context menu.

Rated 5 out of 5 stars (2)
1,631 users

Re-Pagination

See more search results etc. on one page, concatenating several pages together...

Rated 4 out of 5 stars (55)
7,178 users

Reader

Reader is the ultimate Reader tool for Firefox.

Rated 5 out of 5 stars (66)
35,388 users

Rebrand Requires Restart

This wizard creates an XPI that rebrands Firefox, SeaMonkey or Thunderbird. You can change the brand name as well as the brand images and icons.

Rated 4 out of 5 stars (13)
4,013 users

Reddit History

Keeps track of all the submissions you viewed on Reddit

Not yet rated
59 users

Redirect Bypasser

Avoid redirects and has direct access to the sites you want to visit.

Rated 4 out of 5 stars (38)
11,240 users

RefControl Requires Restart

Control what gets sent as the HTTP Referer on a per-site basis.

Rated 4 out of 5 stars (186)
76,072 users

Relaxed the HTML Validator Requires Restart

"Relaxed" is a HTML validator which validates HTML documents using it's own schema definitions written in Relax NG with embedded Schematron patterns.

Rated 2 out of 5 stars (4)
24 users

Reload Skip Cache Button

Reload page without using content stored in the browser cache to make sure you get any updates.

Rated 3 out of 5 stars (2)
770 users

ReloadPAC Requires Restart

Workaround for Bug 351163 (Thunderbird bypasses proxy.pac for first connection).

Not yet rated
9 users