rsync runs very well in cygwin (or without on its own - just copy rsync.exe, cygwin1.dll from a cygwin installation and you are good to go if you have some ssh; if you want rsync to use cygwin's ssh, you'll need to also copy ssh.exe and a handful of other .dll).

There doesn't seem to be anything else close to rsync's robustness or completeness of functionality - on Windows or Linux.