Vim is a very powerful text editor created by Bram Moolenaar. Vim is so versatile that it can even be used as a plug-in in Microsoft Visual Studio.
If you are interested in learning how to use Vim editor, then check out the following resources :
interesting article shows how to use Tabs in Vim. Tab support is one of the new features in Vim 7.0 and it is possible to use tabs in both GUI mode of Vim as well as the console mode.