rossOver is based on Wine, which is a free, open-source program, but can be quite difficult to use. Like Wine, Crossover uses a compatibility layer to allow Windows apps to run on the Mac without requiring a full version of Windows to be installed. That can save you a lot of money as you need to buy a copy of Windows for use with virtualization programs such as Parallels Desktop and VMware Fusion. But although Wine is a free, open-source program, it’s too
