Perhaps the only extension on the Addpns store currently that allows you to move multiple tabs between windows. Just a few issues, the right tabs or left tabs menu option does not select the tab you right clicked on when moving, it only selects tabs to the left or right of that tab. Which means if you want to move your current tab and all tabs to the right of it, you have to right click on a unrelated tab to the left of it and then select the move right tabs option. Also the important selected tabs option is initially disabled for no reason, you have to go into the preferences of this extension to enable it.