VNC replacement for screensharing

Hi all,

we're currently using VNC for sharing the console screen to several users. That works okay with RDMs default and UltraVNC implementations, except that VNC is a real CPU hog (on the server) and the session tends to hang whenever there's a glitch on the line.

My question to all of you (i.e. including users) is therefore:

Do you know an alternative to VNC, that

- does screen sharing (aka console sharing)
- reconnects automatically and reliably after a (short) line failure
- does not hog the server CPU
- does not consume too much bandwidth
- and, most importantly, is among the types support by RDM

RDP would be the ideal choice except I don't see how we can share the *same* screen with RDP to multiple users some of them view-only, some read-write. I don't know any of the other types supported by RDM, though, and would be happy to get your recommendations.