Unpacked extension loader Requires Restart
This addon should be useful for addon developers who prefer to work with unpacked exentsions for test purpose.
Adds buttons to open and manage the find bar.
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.
Show notable forks of Github projects.
SeaMonkey Debug and QA UI Requires Restart
Provides Additional Debug and QA UI for SeaMonkey development and testing.
Export All Certificates Requires Restart
Adds an option to export all root certificates.
Opens the Add-ons window to perform tasks on your installed Extensions, Themes, Plug-ins and Language packs.
WOT Play Replay Requires Restart
Данное приложение расширяет возможности сайта wotreplays.ru
Google Keep Notes brings Google Keep right into your Firefox Sidebar.
Reload page without using content stored in the browser cache to make sure you get any updates.
Scrapbook X CopyPageInfo Requires Restart
Copies the information from ScrapBook data items.
Słownik synonimów PL Requires Restart
Adds to browser Polish synonyms dictionary from package LibreOffice.
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.
No More .org prevents Firefox from loading websites with .org in the URL. This add-on was made for testing in Firefox
superbar Requires Restart
Clines Requires Restart
Clines, a little game
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.
WebPG for Mozilla Requires Restart
An extension which provides GnuPG/GPG/PGP related functions to Moizilla Firefox, Thunderbird and Seamonkey
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.
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.