Virtual Machine Manager

I am fairly new to the IT world and am currently attending school for INT. I am trying to do a special project and find a program that will help manage virtual machines. I need to find a program that will allow me to make changes to multiple vm's without having to switch between the actual vm's themselves. I would prefer one that would work with VMware, but I have also used VirtualBox and like that program. I haven't decided yet what VM program to use yet, so any combination of VM software and VM management software will work. So if anyone has used, or knows of a program that would consolidate and manage all vm's in use, I would appreciate a nod in the right direction to begin my research. Thank you!