KVM virtual machine software review

Powerful Linux-native virtualization for users comfortable with the tools around it.

Oracle VM VirtualBox virtualization platform review

VirtualBox is a free and open-source virtualization software for Windows, Linux, and macOS users.
ZDNet

Goodbye, VirtualBox - I found a better, more reliable VM manager for Linux

If you need to use virtual machines on Linux, try Virt-Manager. Virt-Manager is more reliable than VirtualBox. Virt-Manager is completely free and open-source. I'm a long-time supporter of VirtualBox.

Proxmox VE virtualization platform review

Powerful open-source virtualization for users ready to move beyond desktop VM tools ...
MUO on MSN

These open-source projects have been running for 20+ years — and they're still unfinished

Two decades in, still no version 1.0.