Why pay for virtualization software when you can have it for free? Oracle's VirtualBox is a great solution for getting multiple operating systems running on your Mac at the same time, and in fact for regular, non-enterprise users it is completely free software. All that is required is to download the software from its official website and start making use of virtual machines.
Free Version of VirtualBox
For regular, non-enterprise users, VirtualBox from Oracle can be used completely free to make use of other operating systems like Windows or Linux on your Mac. It doesn’t even require the creation of an account.