Parallels Software Paralells Desktop 11 PRO Advanced networking tools and configuration for virtual networks Business Cloud Service Support Headless mode for running virtual machines in the background without user interface Headless mode for running virtual machines in the background without user interface. Parallels Desktop for Mac Pro Edition is the easiest and most powerful solution for developers, power users, and other demanding pros looking to increase productivity. Enhanced memory (64 GB RAM) and processing power (16 vCPU) for improved performance. 1-year subscription for one Mac. Subscription can be canceled at any time.