What sources of funding do faculty in Computer Science dept. in US universities have other than NSF?
Off the top of my head, I can think of American CS faculty who have been supported by grants, contracts, or gifts from each of the following:


US funding agencies: DARPA, Department of Defense, Department of Energy, National Instutites of Health, Department of Homeland Security, Office of Naval Research, Army Research Office, Department of Education, NASA, ...
Foreign funding agencies (usually in concert with NSF, for international collaborations): Deutsche Forshungsgemeinschaft (Germany), Centre national de la recherche scientifique (France), Israeli Science Foundation, Danish National Research Foundation, ... 
Private foundations: Sloan, Packard, Simons, Fulbright, Guggenheim, ...
Industry: Google, Microsoft, Facebook, Cisco, Boeing, Adobe, NVidia, ...