VyOS

VyOS project started in 2013 as a fork of Vyatta Core when the open-source Vyatta version was discontinued. Now VyOS is a fully open-source network OS that provides a wide range of features for any network, from small business to Internet service provider. It runs on commodity x86 hardware from desktop router boards to large servers, as well as virtualized in all popular hypervisors and multiple cloud hosting platforms including VMware, KVM, Xen, Amazon EC2, Microsoft Azure, Google Cloud Platform and more. Its aim is to provide the reliability and user experience of traditional hardware routers, without getting tied to any specified hardware or software vendor. Unified command-line interface and HTTP API for all functions, built-in configuration versioning and archiving, and reversible image upgrades allow network admins to make configuration changes easily.