Recently Updated Extensions
Additional functionality for the browser's default image and video viewer.
UnMHT allows you to view MHT (MHTML) web archive format files, and save complete web pages, including text and graphics, into a single MHT file in Firefox/SeaMonkey.
Finally, an efficient blocker. Easy on CPU and memory.
Displays a country flag depicting the location of the current website's server and provides a multitude of tools such as site safety checks, whois, translation, similar sites, validation, URL shortening, and more...
PlayFlash 64bit Requires Restart
Flash player plugin - unofficial xpi repack for 64bit browsers. Use when official plugin installer is not suitable. All binary files are copyrighted by their authors and distributed for free.
PlayFlash 32bit Requires Restart
Flash player plugin - unofficial xpi repack for 32bit browsers.
Use when official plugin installer is not suitable.
All binary files are copyrighted by their authors and distributed for free.
Web Developer Requires Restart
The Web Developer extension adds various web developer tools to the browser.
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.
Restrict Proxy by Private Windows, Tabs and Domain List
EPUBReader Requires Restart
With EPUBReader you can read ePub files just in Firefox. No additional software needed!
Adds private tabs.
Active Stop Button Requires Restart
Stop gif animation with button, context menu or Esc key
Theme Font & Size Changer lets you change the global font size and font family used for the user interface in Firefox. Design your browser with your favorite font.
Messenger for Facebook™ lets you bring a Messenger right into your browser to chat with your friends.
Password Tags Requires Restart
Adds metadata and sortable tags to the password manager.
ColorfulTabs Requires Restart
The first addon you should be installing on a fresh Firefox install. A must have. The most beautiful yet the simplest add-on that makes a strong colorful appeal. Colors every tab in a different color.
YouTube Flash Video Player is a powerful tool that will let you choose Flash video player as default YouTube video player.
Simple Locale Switcher Requires Restart
An easier management of the user interface language
Auto delete cookies and localStorage objects as soon as they become unused
An extension that adds direct links to download YouTube videos as MP4 and FLV. It has a simple interface and it downloads videos directly from YouTube. The extension integrates with YouTube's interface and adds a download button below the player.