VyOS is an open source network operating system based on Linux. It provides a robust platform for connecting, routing, and managing networks of any size. It is designed to be a cost-effective alternative to expensive, proprietary networking solutions. VyOS provides a range of features including: IP routing, BGP, OSPF, VPN, firewall, QoS, NAT, and more. It supports a variety of network architectures, including routed, bridged, and transparent modes. It is easy to configure and manage with a command-line interface (CLI) and a web-based graphical user interface (GUI). VyOS also has a wide range of available plugins and packages, allowing users to customize their networks. VyOS is designed to be secure, reliable, and highly-available, making it suitable for use in mission-critical environments.
Discontinued The project seems to be no longer updated. The latest version, 2.1.9, released in February 2015, can still be downloaded from the official website.