Implementations
- BIRD implements both OSPFv2 and OSPFv3
- GNU Zebra, a GPL routing suite for Unix-like systems supporting OSPF
- Netware implements OSPF in its Multi Protocol Routing module.
- OpenBSD includes an OpenOSPFD implementation within the OpenBGPD protocol.
- Quagga, a fork of GNU Zebra for Unix-like systems
- XORP, a routing suite implementing RFC2328 (OSPFv2) and RFC2740 (OSPFv3) for both IPv4 and IPv6
- Windows NT 4.0 Server, Windows 2000 Server and Windows Server 2003 implement OSPFv2 in the Routing and Remote Access Service, although the functionality was removed in Windows Server 2008.
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