How to use rsync from Windows PC to remote Linux server?

If you want a free app that bundles cygwin and rsync with a nice graphical interface, have a look at Deltacopy:

http://www.aboutmyip.com/AboutMyXApp/DeltaCopy.jsp

• Incremental backup - Copies part of the file that is actually modified
• Task scheduler - Profiles in DeltaCopy can run based on a schedule
• Email notification - Administrators can receive email confirmation on successful as well as failed transfers
• One-click restore - Backed up files can be easily restored.
• Windows friendly environment - No need to manually modify configuration files or play around with command line options.

One option could be to install rsync by installing cygwin on windows. There's probably a much more direct approach for that.

Another option could be to rsync from the linux side - you could set up a means for the remote machine to access local files, and then rsync from over there (take a look at mounting smb/cifs shares).

I suspect there are better options still, but maybe that'll help a bit.

Update for 2017

With the Linux subsystem available in Windows 10, you can probably install an ssh & rsync server very very easily with that and use rsync with Windows through that.

MinGW has a built-in rsync that seems to work pretty well. It even has a daemon mode -- although I haven't tested that. I recommend MinGW over cygwin for several reasons: MinGW is a smaller install and it's Windows native.

Lifehacker has a great article on rsync for the PC.

Seems like lifehacker recommends Cygwin as well.

There's a instructionable on this here as well: http://optics.ph.unimelb.edu.au/help/rsync/rsync_pc1.html