- Xmeeting

- 92 downloads
XMeeting is a user friendly video conferencing tool for OS X based on the OpenH323 project.
- GnuGk



- 115 downloads
The GNU OpenH323 Gatekeeper is a rich H.323 gatekeeper including radius and database support.
- Elastix



- 279 downloads
Elastix is a user-friendly open source telephony calling tools for Asterisk PBX.
- TrixBox CE



- 144 downloads
TrixBox CE is an internet telephony program based on Asterisk PBX.
- Skype



- 115 downloads
Skype is one of the most popular free telephony applications available.