If you have installed Parallels on your Mac and no longer need it or you just need to free up more disk space, you might like our guide on how to uninstall Parallels on a Mac safely. Uninstall Parallels on a Mac Parallels Desktop is a popular utility which allows Mac users to run Windows-based applications on the macOS without rebooting. Mac Tutorial - How To Completely Uninstall Applications On A Mac - Duration: 2:42. How to uninstall windows from parallels Thepankotletutorials.