Tabbrowser ExtensionsWhat's this? ...abstract Tabextensions 3, aka TBE3 is an addon which improves tabbed browsing experiences of Firefox, with various unique features. For example: Close multiple tabs by one action (ex. "Close Right Tabs", "Close Left Tabs", and so on.) Show a thumbnail, a progress meter, in each tab. Move the tab bar from top to left, right, or bottom. The tab bar can be changed from horizontal to v
