emby – a media server/client that runs on Linux/Mac/Windows/freeBSD/docker & NAS devices with clients on Android TV/fireTV/Apple TV/Roku/Windows/PlayStation/Xbox/iOS & HTML5 Capable devices
IIS Media Services – Extensions for the Windows IIS web server that deliver intelligent progressive downloads, Smooth Streaming, and HTTP Live Streaming
Kaltura – full-featured Affero GPL video platform running on your own servers or cloud
LIVE555 – a set of open source (LGPL) C++ libraries for multimedia streaming; its RTSP/RTP/RTCP client implementation is used by VLC media player and MPlayer
Logitech Media Server – open source music streaming server, backboned by a music database (formerly SlimServer, SqueezeCenter and Squeezebox Server)
Nimble Streamer – freeware server for live and VOD streaming (transcoding function is not free)
Unreal Media Server – multi-protocol media server for streaming any file format and real time live audio/video to WebRTC, Flash, Silverlight, iOS, STB, HTML5 viewers
Wowza Streaming Engine – a media server for Flash, Silverlight, Apple iOS (iPhone/iPad), QuickTime, 3GPP mobile, IPTV and game console video/audio streaming