OpenH323 Gatekeeper - The GNU Gatekeeper is a H323 gatekeeper which is based
on the OpenH323 H323 stack
It is released with the GPL (GNU Public Licence)

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 voxilla, OhPhone, OpenPhone and MS NetMeeting.

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

It's currently maintained by Jan Willamowius <jan@willamowius.de>

WWW: http://www.gnugk.org/

Also see
WWW: http://www.openh323.org/