For Linux environments sysadmins could consider Proxmox VE as a good alternative to Red Hat, in large part because it is relatively cheap compared to Red Hat solutions. At the moment it looks like Proxmox is quite popular in some parts of Europe, particularly in Germany. It’s a good solution where smaller businesses have staff who understand open source software well.
Proxmox has one advantage in that it is a three in one product – it does virtualization, offers containers and can also run a software designed storage solution. So companies who want to focus on containers and software defined storage may want to investigate Proxmox. In that sense Proxmox is a close competitor to Virtuozzo.