FlowJo, the supreme flow cytometry analysis software previously only available for Macs, is now shipping as v5 for Windows. It's written in Java, so maybe the two platforms will be able to develop alongside each other. Hopefully the increased market will bring down the ludicrously high prices soon as well.
Seems like it's still beta though, and the Mac files aren't compatible with the PC version, so better leave this for a while.