OpenGatekeeper is a H323 GateKeeper based on the OpenH323 project.
It is written by Equivalence, who also write the OpenH323 library

A H323 Gatekeeper manages multiple H323 clients on a network
and provides a nice user name to IP mapping.

As it follows the H323 standard, it is compatible with H323
client programs including OhPhone, OpenPhone and MS NetMeeting.

It makes use of PWLib and the OpenH323 stack from Equivalence Ltd Pty

For more information see
WWW: http://www.openh323.org/