Apple's multi-platform multimedia software architecture. Supports RTSP/RTP with H.261, H.263, MPEG 1 Video, Layer 1 and 2 Audio, DVI, mu-Law, a-Law and others. [Client, includes source]

RealNetworks cross-platform multimedia player. Supports RTSP/RTP with H.261, u-Law, a-law, MP3, DVI. [Client]

Media delivery platform for streaming multimedia productions. Supports RTSP/RTP delivery of AVI, WAV, MP3, and MOV files, as well as RTSP delivery of RealAudio and RealVideo [Server, Proxy, and SDK; source available]

Apple's open source streaming server and proxy. Supports RTSP/RTP serving of MOV files. [Server and Proxy, includes source]

SDK for adding streaming media to Java applications and applets. [Client SDK]

MPEG-4/ISMA interoperability suite produced by Cisco. Supports MPEG-4 Audio (aac), MPEG-4 Video, RTP, RTSP, MP3 (using RFC 2250). Includes client, server (Darwin), and encoding tools. [Client and Server, includes source]

Supports serving of .au files via RTSP/RTP for Windows NT and Solaris [Server, source available]

IBM's toolkit is based on tools developed for video and other applications in 1995-1996. Their toolkit reflects the Unix philosophy of shells, processes and generic tools, and demonstrate a shell-based implementation of the protocol and its usefulness...

RTSP/RTP implementation for multimedia systems researchers who want to investigate protocols and operating systems issues [Server, Client, Proxy; includes source]

Open Mash supports the Mash streaming media toolkit and distributed collaboration applications based on the Internet Mbone tools and protocols. [Client, includes source]