Launchy is a free well-known windows utility, which helps you not to worry about launching your application by clicking it on the start menu or somewhere else. Launchy has released a version for linux users which can probably replace another application launcher called gnome do. You can download a copy of launchy here and install it.
Launchy indexes the programs in your start menu and can launch your documents, project files, folders, and bookmarks with just a few keystrokes!
