So, I'm very interested in running my testing machines and servers virtually and considered vmware, VirtualBox, VirtualPC and qemu. From all those solutions, I like qemu and VirtualBox most, but both of them lack of a uniformed, managed interface to handle the machines.
There was vmware Server a few years ago, which was also free and somehow the perfect solution for me. But it's now unsupported and deprecated. Is there any free follow-up or alternative? I don't want to run x players (vmware/virtualbox or whatever) in their own window.
I know there's also vmware ESX, but this requires a very strict hardware constellation such as plain intel products (chipset, network adapter) etc.