Software KVM application?

[Senectus .]

I read "somewhere" that there is a Linux app that behaves like a KVM
device, allowing you to swap mouse keyboard and screen between
machines.
I remember reading that this app was "better" than VNC type apps (not sure why).

Does anyone know what it was I was reading about.. I've been looking
and looking and I can't seem to find a hint of it anywhere..

Sorry for being so vague.. and thanks for your time


-- 
Ubuntu Warty 4.10