VyOS is a community fork of Vyatta, a Linux distribution discontinued in 2013. It is a network operating system that provides software-based network routing, firewall and VPN functionality. VyOS is based on Debian; its features include the ability to run on both physical and virtual platforms, and support for para-virtual drivers and integration packages for virtual platforms. VyOS was completely free to download and use until the release of version 1.2.0 in January 2019 when the project turned commercial, providing the operating system with various levels of support subscriptions. Daily "rolling" images are still available for free download though.
