Columbia University rtspd - Supports serving of .au files via RTSP for Solaris, FreeBSD 3.x, Linux, Windows NT. KOM(S) Streaming System (komssys) - Implements a streaming system based on the IETF protocols RTSP, SDP, RTP/RTCP to provide a base for researchers and developers. Includes code for a server, a client, and a proxy. GStreamer - A multimedia framework with a plugin based architecture for a variety of platforms including Linux, Windows and OSX. Site has downloads, developer resources, and links to applications using the framework. FFmpeg - Cross-platform solution to record, convert and stream audio and video. It includes libavcodec - the leading audio/video codec library. QuickTime Streaming Server - Apple's closed-source streaming server. Darwin Streaming Server - The open-source version of Apple’s QuickTime Streaming Server technology. Streams hinted QuickTime, MPEG-4, and 3GPP files. Helix Universal Media Server - Available in various editions. Developed by RealNetworks. The Helix DNA Server - Streams MP3, RealAudio and RealVideo. Open-source and proprietary editions. The LIVE555 Media Server - Complete open-source RTSP server application. Pre-built binaries and source code. Wowza Media Server - Java-based server for streaming of live and on-demand audio and video. Commercial application. VLC media player - Open-source cross-platform multimedia player and framework, which can also stream audio and video in a number of formats.