IPFire is running very well in a virtual environment.

See this chart to get a clue about how many machines are running virtually.

Virtualised systems
24.45%

Hypervisors

This is a list of all hypervisor vendors that IPFire is running on.

VMware
44.50%
KVM
28.35%
Microsoft
16.08%
Xen
8.24%
VirtualBox
2.23%
Unknown
0.60%