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
24.29%

Hypervisors

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

VMware
44.80%
KVM
26.87%
Microsoft
16.11%
Xen
8.97%
VirtualBox
2.61%
Unknown
0.64%