Quagga is a network routing software suite providing implementations of Open Shortest Path First (OSPF), Routing Information Protocol (RIP), Border Gateway Protocol (BGP) and IS-IS for Unix-like platforms, particularly Linux, Solaris, FreeBSD and NetBSD.
- - Quagga is the most popular Linux alternative to FreeRouter.
- - Quagga is the most popular Open Source & free alternative to FreeRouter.
BIRD is an open source implementation of a TCP/IP routing daemon for Unix like systems. It supports both IPv4 and IPv6, multiple routing tables, and a BGP, RIP and OSPF routing protocols, as well as statically defined routes.
exabgp - The BGP swiss army knife of networking.
Unlike BIRD or Quagga, ExaBGP was not designed to transform a general purpose server into a router, but to allow engineers to control their network easily. Think of it as Software Defined Networking for people with usual BGP route.
- - ExaBGP is the most popular Mac alternative to FreeRouter.
XORP is an Internet Protocol routing software suite. It provides a fully featured platform that implements IPv4 and IPv6 routing protocols and a unified platform to configure them. It is the only open source platform to offer integrated multicast capability.
- - XORP is the most popular Windows alternative to FreeRouter.