FLAC - A free, open source codec for lossless audio compression and decompression
Wowza - Streaming media server supporting all known streaming protocols.
Opus Interactive Audio Codec - Opus is a totally open, royalty-free, highly versatile audio codec.
MistServer - MistServer is a lightweight, open-source multistandard multimedia server.
Vorbis - Ogg Vorbis is a fully open, general-purpose compressed audio format for mid to high quality...
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.