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Orkut Toolbar Requires Restart
Orkut Toolbar helps you to format the text of your posts in the Orkut forums, easily access all common functions of orkut, create and manage custom signatures and insert and view images and flash movies in orkut posts and scraps.
OverbiteFF Requires Restart
Add legacy protocol support back to Firefox and SeaMonkey with OverbiteFF, which restores support for Gopher servers, plus CSO/ph searches, finger, whois and more! Cross-platform JavaScript runs anywhere Firefox does.
Peachphone : virtual phone (Android/iPhone) Requires Restart
http://peachphone.com/release/
Send SMS and MMS worldwide, Video from your webcam, video from Youtube, send photos, manage your contacts (Thunderbird, Outlook, MSN, Yahoo)
Periodic Memory Usage Dumper
Saves memory usage information periodically (mainly for troubleshooting), for web/addon developers.
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.
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.
Print Preview Button and Keyboard Shortcut Requires Restart
Adds a "Print Preview" button to the customize toolbar in Firefox.
Binds the Ctrl+Alt-Shift+P keyboard shortcut to Print Preview.
Profile Buttons
A button to be able to open the profile folder, along with two buttons to create profiles, and also switch the current profile.
ProfileSwitcher Requires Restart
It adds some options to launch easily other profiles and the Profile Manager.
Replace Quotation Marks Requires Restart
Replace quotation marks from " ", ' ' to „ ” , ‚’ in text areas.
Restart App Button
Restart the current application, as you might need to do after installing a new extension or theme.
Restart application Requires Restart
Restart the application with one click (or Ctrl Shift Z)
ScrapBook X AutoSave Requires Restart
Automatically saves web page to ScrapBook on browsing.
To create your own collections, you must have a Mozilla Add-ons account.