Uninstalling Parallels and Virtual Machine?

The uninstaller for Parallels is found in the dmg image available on Parallels' web site.

It'll remove the Parallels application from your machine, but it won't delete your Parallels virtual machine. You'll have to do that yourself. The VMs are usually found in ~/Documents/Parallels/

Uninstalling Parallels will not affect your VMware installation or VMware VMs.

And why did you decide to uninstall Parallels Desktop?
I didn't have such intentions while using this app..
Anyway, I think this Parallels Forum page might help you.

Removing Parallels

That information was extremely useful: I had an older version of Parallels that caused kernel panics every time it was launched after I upgraded my OS. Further, all attempts to replace it by a newer version failed, with error messages saying that the installation could not be completed while the virtual machine was still running, and that I needed to launch Parallels to stop the VM. As launching Parallels immediately caused a kernel panic, I was in a Catch-22 situation.

I searched the Parallels knowledge base to no avail and thought about contacting Parallels support, but apparently they charge for customer support and I did not feel inclined to pay them for a problem associated with their software. Using your information, I have now removed the last vestiges of that program from my computer. Thank you

I intend installing Fusion at this point.