Umvirt is open-source virtualization lab & GNU/Linux distro vendor. Open-source techologies is not just for work or just for fun they are for real life!
We recommend:
Umvirt Linux From Scratch (ULFS) is the complex solution to build and run autonomous open-source infrastructure.
Umvirt Certificate Authoruty (CA) is the autonomous SSL-certificates issuer which protects UmVirt sites.