MS Office sucks. Suddently, MS Outlook wanted to install some missing components, while it was running as non-privileged user, so it couldn't, and stuck in some kind of infinite loop. On the other side, I'm so happy that I don't have to work with that crap.
On the other side, Sync2NAS looks pretty good. Sync2NAS is a free mirroring solution for Windows, and it's based on rsync. Actually, it's a frontend to rsync, written in Perl/Tk. I haven't looked at the executable file, but the developer doesn't give away the source. But I got it already. :-) (in case you have sf.net account, have a look in /home/groups/s/sy/sync2nas on shell1.sf.net).