I need to Keep Synergy On Top Of All Running Applications

I'm not actively working on Synergy any more, but it's open source, so others are free to jump in and make changes if they want.

The level of the window is set here. I don't know whether one of the other window levels (currently listed here, but Apple likes shuffling their documentation around, so don't expect that link to work forever...) could be used to make the floater appear on top of the screensaver.