Unbelievable. Firefox STILL has ZERO quickcommand for merging all open windows into a single window with multiple tabs??? How is this possible? Very slipshod of y'all. But then again, thanks for all of the other great options. Would totally appreciate this feature as an addition to your next update. Have found an "add on" that supposedly supplied this much requested and very popular command, however, all of the links take me to a mozilla add on page that claims "the requested page cannot be found"... very disappointing. If y'all know where I can get an ACTIVE link to any add on which supplies the above feature amongst its options, I'd really truly appreciate it. Otherwise, please try to do add the aforementioned in your next release. I'm on a new iMac running OSX 10.6.8
No need to have any add-ons. Just drag the tab of the new window to the existing tabs in another merged window.
See the image below where I am dragging the g icon from Google window to the tab spot beside Yahoo. Once you see the arrow appearing, dropping it there merges the dragged window to the list of tabs on the target windows.