Top-Rated Extensions

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Unpacked extension loader Requires Restart

This addon should be useful for addon developers who prefer to work with unpacked exentsions for test purpose.

Rated 5 out of 5 stars (1)
3,005 users

Find Buttons

Adds buttons to open and manage the find bar.

Rated 5 out of 5 stars (1)
145 users

Search YouTube For This Requires Restart

Right click on selected or a link click search YouTube For Video of in the menu, a new tab will open with the searched text.

Rated 5 out of 5 stars (1)
303 users

Lovely forks

Show notable forks of Github projects.

Rated 5 out of 5 stars (1)
95 users

SeaMonkey Debug and QA UI Requires Restart

Provides Additional Debug and QA UI for SeaMonkey development and testing.

Rated 5 out of 5 stars (1)
465 users

Export All Certificates Requires Restart

Adds an option to export all root certificates.

Rated 3 out of 5 stars (2)
657 users

Add-ons Button

Opens the Add-ons window to perform tasks on your installed Extensions, Themes, Plug-ins and Language packs.

Rated 5 out of 5 stars (1)
1,952 users

WOT Play Replay Requires Restart

Данное приложение расширяет возможности сайта wotreplays.ru

Rated 5 out of 5 stars (1)
190 users

Google Keep Notes

Google Keep Notes brings Google Keep right into your Firefox Sidebar.

Rated 5 out of 5 stars (1)
1,379 users

Reload Skip Cache Button

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

Rated 5 out of 5 stars (1)
696 users

Scrapbook X CopyPageInfo Requires Restart

Copies the information from ScrapBook data items.

Rated 5 out of 5 stars (1)
565 users

Słownik synonimów PL Requires Restart

Adds to browser Polish synonyms dictionary from package LibreOffice.

Rated 5 out of 5 stars (1)
136 users

TheRealURL Requires Restart

Get URL information: expand short URLs, get title and content type information without visiting the site.

UPDATE, AUG 2013: THIS EXTENSION IS NO LONGER SUPPORTED. The source is open - if you wish to take on the development, you're welcome.

Rated 3 out of 5 stars (7)
376 users

No More .org

No More .org prevents Firefox from loading websites with .org in the URL. This add-on was made for testing in Firefox

Rated 3 out of 5 stars (3)
1 user

superbar Requires Restart

superaddon!

Rated 3 out of 5 stars (3)
8 users

Clines Requires Restart

Clines, a little game

Rated 3 out of 5 stars (3)
40 users

RequestPolicy v0.5 Legacy Requires Restart

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.

Rated 3 out of 5 stars (4)
1,575 users

WebPG for Mozilla Requires Restart

An extension which provides GnuPG/GPG/PGP related functions to Moizilla Firefox, Thunderbird and Seamonkey

Rated 3 out of 5 stars (22)
2,398 users

CSHelper Requires Restart

This extension packages versions of the CamStudio recorder application and the XVID Codec. It is primarily intended to be used with the screen capture feature of the Video DownloadHelper add-on, when on Windows.

Rated 3 out of 5 stars (16)
21,848 users

Duplicate Tab Blocker

Prevent duplicate tabs. Allow only one tab for a url. If you click a link that is already opened in a tab, then existing tab would be focused instead of opening a new tab. This works even across firefox windows.

Rated 3 out of 5 stars (10)
868 users