Define your own shortcuts to move the tabs into firefox.
You can move the tabs along the tab bar and at both ends.
Move To Window No Restart
You can move a tab to other window very easily.
The MozFBRH extension for Mozilla Firefox enhances the navigation toolbar by adding Middle Click/Control+Click/Shift+Click functions to the Back, Forward, Reload, Home, and Throbber Buttons, as well as the Back and Forward history dropdown menus...
Mozilla Labs: Prospector - Instant Preview No Restart
Start loading pages as you select them from the location bar suggestions
Mozilla Labs: Prospector - LessChrome HD No Restart
Show less chrome by default unless it's needed
Mozilla Labs: Prospector - Predictive Newtab No Restart
Show predictions of where to go on new tabs
Mozilla Labs: Prospector - Search Tabs No Restart
Show colorful search tabs to search quickly with just a click
Mozilla Labs: Prospector - Site Suggest No Restart
Suggest sites in the corner of new tabs based on your interests.
Mozilla Labs: Prospector - Snaporama No Restart
Keep your tabs organized by taking snapshots of groups of tabs and quickly bringing them back when you need them.
Mozilla Labs: Prospector - Tab Focus No Restart
An addon that reduces tab clutter by extracting your current browsing session into a new Panorama group.
MozTrapHelper No Restart
Add those missing functionalities to MozTrap ( http://moztrap.mozilla.org/ ).
MRU Tabs No Restart
Alters the Ctrl+Tab hotkeys so that they cycle through all tabs in the order of their activation recency, much like the Alt+Tab hotkey does on the operating system level. When the active tab is closed, the most-recently active tab is selected.
MSession No Restart
Save your Session on Mobile,
Continue Browsing Anywhere Anytime
MUA Web Unicode Converter No Restart
It is a Firefox addons that will check web content and convert to Unicode encoded text if they are Zawgyi. It use Parabaik Converter and Myanmar Font Tagger Script(by Ko Thant Thet Khin Zaw).
Add favicon button of your favorite sites in tabs browser to open new tabs and in homepage button to have more homepage.
Multi Links Plus lets you open, copy or bookmark multiple links at the same time rather than having to do them all individually.
open a list of urls at one time, for people who like to check several websites everyday
open a list of urls at one time, for people who like to check several websites everyday.
upgraded version, support multiple lists.
"Multi smart search" displays a new context menu including all the installed search engine. Try the new version! DOWNLOAD it there: https://addons.mozilla.org/firefox/addon/11173/contribute/roadblock/?src=version-history&version=2.0.20110408 :)