I use open box and I have custom key bindings. Anything that I want. About alfred: I have this script from crunchbang that uses dmenu and then displays and al

I use open box and I have custom key bindings. Anything that I want. About alfred: I have this script from crunchbang that uses dmenu and then displays and allows you to search for a binary to run. Also just alt+f3 in most DEs will open a dialog that you can run binaries/scripts in your path with. If what you want is something more along the lines of a terminal where you can see the output, there's extensions for most DEs where a terminal will be opened on certain key combination and place it somewhere and hide it immediately when you're done with it.