Keybreeze is a command-line toolbar; Press a hotkey on your keyboard to
activate Keybreeze, type a keyword, and press Enter. Keybreeze comes with
over a hundred preset keywords, and you can easily make your own. This
program also supports commands that let you search the Internet, look up a
word in a dictionary, check the weather, activate the screensaver, or shut
down your computer. (in System Utilities)