OpenBGPD is a free implementation of the Border Gateway Protocol (BGP), Version 4. It allows ordinary machines to be used as routers exchanging routes with other systems speaking the BGP protocol. The portable version (e.g. for Linux) does not have the means to influence kernel routing tables. It is only suitable for route servers/collectors.
The OpenBSD rpki-client is a free, easy-to-use implementation of the Resource Public Key Infrastructure (RPKI) for Relying Parties (RP) to facilitate validation of the Route Origin of a BGP announcement. The program queries the RPKI repository system, downloads and validates Route Origin Authorisations (ROAs) and finally outputs Validated ROA Payloads (VRPs) in the configuration format of OpenBGPD, BIRD, and also as CSV or JSON objects for consumption by other routing stacks.
BIRD is a dynamic IP routing daemon supporting both, IPv4 and IPv6, Border Gateway Protocol (BGPv4), Routing Information Protocol (RIPv2, RIPng), Open Shortest Path First protocol (OSPFv2, OSPFv3), Babel Routing Protocol (Babel), Bidirectional Forwarding Detection (BFD), IPv6 router advertisements, static routes, inter-table protocol, command-line interface allowing on-line control and inspection of the status of the daemon, soft reconfiguration as well as a powerful language for route filtering