coturn TURN server project
VoIP SIP and SKINNY quality analyzer and packet / audio recording tool
Matrix reference homeserver
Desktop client for Matrix using Qt and C++20
Combat Flight Simulator for LINUX. WW2. Network and VOIP. Open-source.
High performance, production quality STUN server and client library
Accent interfaces and controls systems through goals and policies
Enterprise Business Operating System
Linux Server and Data-Center WAN Optimization
Enterprise Billing & Accounting
SIP Video Multiconference Media Server with WebRTC support.
F-Talk cross-platform p2p encrypted secure voip software