Proxmox Server Solutions GmbH is an Austrian company specialized in developing open-source solutions for virtualization and IT infrastructure management. Based in Vienna, the company was founded in 2005 and quickly established itself as a key player in the open-source ecosystem thanks to its innovative and accessible solutions. Proxmox is the publisher of two flagship products: Proxmox Virtual Environment (VE), a complete virtualization platform combining KVM and LXC, widely adopted by enterprises, public institutions, and service providers. Proxmox Mail Gateway, an open-source email security gateway designed to protect communication infrastructures against spam, viruses, and emerging threats. The company operates on a transparent business model based on free software and supported by professional services: subscriptions, support, certified updates, and technical expertise. It benefits from an active global community that continuously contributes to the evolution of its products. With a philosophy focused on simplicity, performance, and accessibility, Proxmox offers businesses a credible and robust alternative to proprietary solutions, while promoting innovation and digital sovereignty.