Proxmox
Proxmox VE (Virtual Environment) is an open-source virtualization management platform that combines KVM-based full virtual machines with LXC containers under a single web-based interface.
Definition
Proxmox VE (Virtual Environment) is an open-source virtualization management platform that combines KVM-based full virtual machines with LXC containers under a single web-based interface.
Overview
Proxmox VE, developed by the Austria-based Proxmox Server Solutions GmbH, is built on Debian Linux and integrates the KVM hypervisor for full virtual machines alongside LXC (Linux Containers) for lightweight, OS-level virtualization. Administrators manage both types of workloads through one web UI, CLI, or REST API, rather than needing separate tooling for VMs and containers. Beyond core virtualization, Proxmox VE includes built-in high-availability clustering, live migration of running VMs between hosts, software-defined storage integration (including Ceph), and backup/restore tooling. Because it is free and open source (with an optional paid enterprise support subscription), it is widely adopted by homelab users, small and medium businesses, and service providers as a self-hosted alternative to commercial platforms such as VMware vSphere. Proxmox has grown further with Proxmox Backup Server (a dedicated backup solution) and Proxmox Mail Gateway, extending the ecosystem beyond just the hypervisor layer into a broader self-managed infrastructure stack. It is often mentioned alongside OpenStack in this space. It is often mentioned alongside Nutanix in this space.
Key Features
- Combined management of KVM full virtual machines and LXC containers
- Web-based UI, CLI, and REST API for cluster administration
- Built-in high-availability clustering and live VM migration
- Integrated support for Ceph and other software-defined storage backends
- Free, open-source core with an optional paid enterprise support subscription
- Companion tools including Proxmox Backup Server for VM and container backups