After run three launchers: gnome-do, synapse, kupfer, I decided for kupfer, why?
First, gnome do is made in mono, and is not very fast, but it has an advantage very important for my: it has a complement for chat with your contacts in pidgin.
Synapse does not have the complement, but is very fast.
The best alternative for me is kupfer, with a great variety of complements, included pidgin.
By default the abbreviate command is Ctrl+Space, but I changed to Super+Space.
Installing it is very easy:
sudo add-apt-repository ppa:kupfer-team/ppa && sudo apt-get update
sudo apt-get install kupfer
