Playfire - Playfire is the global community for gamers.
Parsec - Streams games locally or over the internet
Gaikai - Gaikai is a company which provides technology for the streaming of high-end video games.
LogMeIn - LogMeIn gives you fast, easy remote access to your PC or Mac from your browser, desktop and mobile...
StreamMyGame - With close proximities to OnLive, StreamMyGame doesn’t work like it, but it allows users to play whether Windows-based games they have on their systems from anywhere in the world on their Windows as well as on Linux system.
UltraVNC - VNC remote access software, support server and viewer software for on demand remote computer support. Remote desktop support software for remote PC control. Free