Parallels is a virtualization utility that allows you to run a Windows operating system environment within the MacOS. The platform shares your computer’s hardware resources with the guest operating system according to customizable specifications. Users can dedicate a set amount of memory, number of processors, and other computer resources to the virtual instance according the resources needed for the intended software. Parallels also streamlines the interface between the two for an integrated experience. It allows the user to use a Windows application without necessarily having to see the windows desktop and start menu.
Parallels is a competitor to VMWare Fusion. View the Parallels website for more information.