wyUpdate for Mono on Linux/Mac OS X

We're looking for a cross-platform update solution for our Windows/Mono winforms app. Is it possible to run wyUpdate on Linux/Mac using Mono? If not, is there a planned future version for Mono?

Sorry, no. wyUpdate makes heavy use of Windows API (which Mono does not emulate). wyUpdate is open source, though. That is, feel free to modify it to work on Linux and Mac.

If you're looking for updaters on Mac and Linux I can give you a few pointers. But wyUpdate is the best updater you'll find for Windows (short of Microsoft's Windows Update).

What would you recommend for Macs? The only thing I've found is Sparkle, but that does full app downloads instead of the patching system that wy uses.

Yeah, Sparkle is the only Mac OS X updater we know of. It's features are quite limited, but it's the best there is.