VimMate is a graphical add-on to Vim with IDE-like features: it does more than the plain Vim while still being lightweight. Even with the additional features, it stays out of the way for it's main task: editing files with Vim. VimMate adds functionality to Vim by embedding Vim GTK GUI (gVim) within VimMate.

Veja o vídeo: http://vimmate.rubyforge.org/VimMate-0.6.0-features.swf
Página do projeto no Rubyforge: http://vimmate.rubyforge.org/