QLab - QLab, Live show control for Mac OS X.
Ant Media Server - Scalable, Ultra Low Latency & Adaptive WebRTC Streaming Ant Media Server provides Scalable Ultra-low latency (0.5 seconds) Adaptive Live Streaming with WebRTC. It supports RTMP, RTSP, Zixi, WebRTC, Adaptive Bitrate, HLS and MP4 recording.
Cue Player - Cue Player software for theater sound and lighting
Red5 - Red5 is an open source Flash media server for live streaming solutions of all kinds.
Trigger Audio and Video Playback - Audio and video cue player for broadcast and live performance.
MistServer - MistServer is a lightweight, open-source multistandard multimedia server.