Routing

the leader in networking software solutions, enables original equipment manufacturers to quickly bring wireless and wired switches to market at significantly lower price points than existing alternatives. The company’s Dynamic Network Architecture (DNA) delivers modular software components - wireless plus NextHop’s flagship GateD solutions for LAN switching, routing, multicast, IPv6 and MPLS - that are easily portable across switching silicon and operating systems. The DNA framework also allows customers and partners to easily augment NextHop solutions with differentiating 3rd party applications and features for carrier and enterprise markets.

Free routing software distributed under GNU General Public License

This is an ongoing project to build encrypting IP routers. It works by tunneling IP packets in encrypted UDP packets. The protocol is designed to be lightweight and simple. Special care has been taken to make this work over dynamic addresses, NAT and SOCKS proxies.

GNU Zebra documentation, not included into releases, but useful and up-to-date.