Is there a good solution for seamless mode (aka Unity in VMWare) in KVM? Host is Linux, guest is Windows 10.

ditto! and to add some weight in favor of KVM, here is my case. I know very well VirtualBox. For the last 5,6 years, I don’t need VM anymore, as Docker became more suitable for my work. Recently I need some VMs to practice Kubernetes at home. I was about to use VirtualBox b/c this is the only hypervisor I know.

But I wanted to get up to date with 2021. I find out quickly that the hypervisor of choice for Linux is KVM.

In case you have heard about the argument in favor of Virtualbox simplicity. It is debatable. You could do the same with Virt-Manager https://virt-manager.org/

Only when you want to do more advanced stuff that KVM would require a heavier learning curve. This requires a bit of a learning curve. But once cleared, KVM + libvirt is far superior to Virtualbox in every aspect. Especially in terms of performance, scripting, and even automating the VM creation with cloud-init.

Scott,

I agree Linux has its own native hypervisor but there are many cases where people use two operating systems for different purposes. In my case, I use both Linux and Windows sometimes so I need something that is common to both the platform.