Projectors
Barco
http://www.barco.com/digitalcinema/

Christie
http://www.christiedigital.com/markets/digitalCinema/index.asp

NEC
http://www.necdisplay.com/Products/Class/?class=digital%20cinema
   
3D Technologies
   
RealD
http://www.reald.com/
http://www.reald-corporate.com/