From Heiko Kretschmer:
ARDMonitor shows the state of Apple Remote Desktop (disabled, enabled, connected) - even if the Administrator asked for permission to monitor/control (that's what ARD's menu extra doesn't).
ARDMonitor comes in two flavours:
- "ARDMonitor" - The normal faceless program which will show an icon on the right side of the menu bar. - "ARDMonitor unquittable" - The same as the above, but it lacks the option to quit the program - maybe useful if you're dealing with lusers.