The company I work for, Idokorro Mobile, has a remote administration suite called Mobile Admin, which allows you to manage Windows, Unix, Domino, Novell etc.
Obviously I can't give you unbiased feedback, but there are some Idokorro users on this site who should be able to.
I'd advise you to try our software for yourself, and judge for yourself. You can download a free fully-functional trial from our website - www.idokorro.com
- and our software is very easy to set up.