Apps
prl_client_appParallels Desktop
◐ Close the app instead
Runs Windows or Linux in a virtual machine.
What it is
Each running virtual machine reserves the memory you gave it.
If you close it
The virtual machine stops as if its power was cut. Shut it down from inside first.
The verdict
◐ Close the app instead. A part of an app. Closing it alone breaks something, so close its app.
In Activity Monitor
prl_client_appprl_vm_app
From Procession’s guide, in the words the app shows.