My Mixed Add-On Collection.....And So On...................!
Keenko is a toolbar for Firefox. This add-on enables you to simultaneously monitor which of your Facebook and Twitter friends are online and where you may easily chat with them not leaving the web page which you browse! Open Beta-testing
When too many tabs are being reloaded on browser start-up, Restore Control stops them from immediately loading all at once according to your preference.
The Headup Firefox add-on was discontinued;
Headup is now a server side component for site owners, check us out on http://www.headup.com