Proxmox is an open-source software company that specializes in developing enterprise-level virtualization solutions. Their flagship products include Proxmox Virtual Environment (VE), Proxmox Mail Gateway, and Proxmox Backup Server. Proxmox VE is a comprehensive platform for managing virtual machines and containers, integrating KVM hypervisor and LXC, while offering robust features such as high availability, live migration, and a user-friendly web interface. Proxmox Mail Gateway provides email security and anti-spam services, and Proxmox Backup Server delivers efficient and secure backups for virtual environments. The company focuses on providing cost-effective and scalable solutions for IT infrastructure management.