WordSmith on Apple Mac
Using a dual-boot system like Boot Camp, WordSmith can run on an Apple Mac. You need a copy of Windows but can install it on a Mac alongside the Mac operating system.
Pierfranca Forchini of the Catholic University of Milan finds VM Fusion (about US$50.00 in the US) works best for her as Windows software like WordSmith works alongside the Mac OS software. Another alternative (free) is Oracle's VirtualBox which I find good. (I use it for running different Windows versions.) Both of these have the advantage of keeping Mac OS visible while Windows is running so you can use both at the same time. You may find Wine (see below) useful as an alternative way of running Windows on a Mac, too.
Using WINE, Windows applications can be run on computers that use UBUNTU as their operating system which means that WordSmith can be opened and used in a Linux setting.