**plus you can create self extracting archives so the user doesn't need the program.**And if the user has a Mac?

I don't know if StuffIt has these features.

Stuffit may create self-extracting archives for Mac or for Windows. But if both Mac and Windows users might be receiving them, polite Mac users do not use that feature... Actually, the free decoder will uncompress these even if they are in self-extracting form for the wrong platform.

Does WinACE or WinRAR have Mac versions?