20/20 Software
They make the WinTel package PC-INSTALL, a great little app that is good competition to InstallShield, and much more affordable. The newest version includes an Xtra which makes your Director .exe files time-expiring demoware. And they have great tech support.

StuffIt InstallerMaker
If you're looking for anything else on the Mac side as an installer, you're probably not looking at the right product.

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