GNOME Do

GNOME Do (often referred to as Do) is a free application launcher for Linux originally created by David Siegel, and currently maintained by Alex Launi. Like other application launchers, it allows searching for applications and files, but it also allows specifying actions to perform on search results. GNOME Do allows for quick finding of miscellaneous artifacts of GNOME environment (applications, Evolution and Pidgin contacts, Firefox bookmarks, Rhythmbox artists and albums, and so on) and execute the basic actions on them (launch, open, email, chat, play, etc.).