VoIP SIP and SKINNY quality analyzer and packet / audio recording tool
Open source Fax server software for inbound / outbound internet Faxing
Browse on Tor / i2p - Anon p2p Chat / FileTx, Conf / Video VoIP
Unified Communications Server
High performance, production quality STUN server and client library
Kazoo Live Medium. From Null to a Full Featured PBX on minutes
SIP Video Multiconference Media Server with WebRTC support.
A plugin for Teamspeak3. This plugin allows you to autofollow a user.
A Murmur-Server Webinterface written in PHP for Mumble
A suite of open-source tools and frameworks for creating SIP apps