Matrix reference homeserver
VoIP SIP and SKINNY quality analyzer and packet / audio recording tool
ICTCore: Unified Communications Framework for web developers
SMS, Fax, Voice Broadcasting and auto dialer Software
Modern, AI-Smart, WASTE p2p for ipv4, Tor and i2p + Voice Conference.
Open source Fax server software for inbound / outbound internet Faxing
VICIdial call center optimization tools, monitoring utilities, and per
Issabel PBX - Unified Communications
Unified Communications Server
Unified Communications System - PBX System
Project about FusionPBX on Live Medium
High performance, production quality STUN server and client library
Kazoo Live Medium. From Null to a Full Featured PBX on minutes
Accent interfaces and controls systems through goals and policies
Asterisk and kannel integration
H.323 Gatekeeper for VoIP and videconferencing
SIP Video Multiconference Media Server with WebRTC support.