Proxmox VE is an open-source server virtualization management solution based on KVM and Linux Containers (LXC). Developed by Proxmox
License: Open Source
Citrix XenServer is a robust, enterprise-focused virtualization platform known for its strong performance and management capabilities, while Proxmox Virtual Environment offers a flexible, open-source solution that is user-friendly and cost-effective, making it suitable for a wider range of users.