What I want is a way to organize tabs into groups of tabs. So in other words, instead of opening a new window and loading it up with tabs, I can just select a different set of tabs to appear in the current window. A good yet incomplete example can be seen here [ http://www.paranoid-androids.com/tabg... ].
In a way Firefox can already do what I'm asking but it requires making a folder of links then selecting "Open All in Tabs." The problem is that doing this wipes out everything you were previously doing.