UPnP AV media servers
Main article: Comparison of UPnP AV MediaServers
360 Media Server, a UPnP media server designed for streaming music to the Xbox 360. It is capable of transcoding many non supported audio formats including AAC, Ogg, Flac as well as the formats the 360 already supports (MP3 and WMA).
Allegro Media Server, an iTunes to UPnP bridge server for Mac and Windows.
Asset UPnP/DLNA, Free Audio specific UPnP/DLNA server for Windows & Windows Home Server. Features album art, audio WAVE/LPCM transcoding from a huge range of audio codecs, replaygain support for streamed audio. Customizable browse tree.
BRisa, an open-source Python-based media server for Linux. It will offer a plugin architecture enabling new services such as Flickr to be added as UPnP services.
Coherence, a free and OpenSource UPnP/DLNA MediaServer based on Python and Twisted. It can be easily enhanced with new backends to support Flickr, Gallery2, Last.fm etc. Also it can be integrated into Nautilus to browse and interact with other UPnP media servers.
DVBViewer Recording Service, an Windows application, mainly for TV/Radio recording/playback, but with the ability to stream live tv/radio as well as multimedia files via UPNP/DLNA.
Elgato EyeConnect, an OS X add-on for Elgato's EyeTV PVR application. It allows for UPnP streaming of recorded content.
eLyric by PS Audio is a free, uPNP media server designed for hi-res audio files up to 32 bits / 192kb streaming. Matching iOS app controller.
FreeNAS, a free operating-system/software (based on FreeBSD), enabling you to turn any x86-based computer into a dedicated stand-alone NAS (Network-Attached Storage) device. (FreeNAS UPnP server code is from the Portable Universal Plug and Play (UPnP) SDK project)
FUPPES, (website link just shows "site will be back in a few days" at present) a free, open source, multiplatform UPnP A/V Media Server. FUPPES supports a wide range of UPnP MediaRenderers as well as on-the-fly transcoding of various audio, video and image formats. FUPPES also includes basic DLNA support.
GeeXboX, an opensource lightweight media center has uShare for Linux.
Gmediaserver, a GNU project with command line interface. Currently in early development stage.
iSedora Media Server, commercial UPnP/DLNA media server for Windows and Mac with support for Sony Bravia TV, PlayStation 3, Xbox 360 and other rendering devices. Employs intelligent transcoding technology. Supports all subtitle formats.
Jamcast, a UPnP/DLNA media server for Windows with features including Virtual Soundcard, comprehensive audio format support (including WM-DRM), on-the-fly transcoding, and integrated podcast RSS/OPML aggregation.
J. River Media Center A multi-faceted media player/organizer with a DLNA/UPnP server, controller, and renderer, including conversion.
Llink, a media streamer using the HTTP protocol that should work with most Syabas middleware hardware (NetworkMediaTank; Popcorn Hour A-100, HDX900, DuneHD, ISTAR mini, Egreat EG-M31A, Buffalo LinkTheater).
Majestic Media Server A UPNP/DLNA server for Mac OS X that works with the PS3, Xbox360, XBMC and other UPNP/AV Clients. Majestic Media Server supports transcoding to allow playback of media not supported by the client device.
media:connect DLNA/UPnP AV compatible media server for iPhone and iPod Touch.
MediaLink, an OS X UPnP server for PlayStation 3 that integrates with iLife.
MediaTomb, an open-source (GPL) UPnP MediaServer with a web user interface and AV transcoding support.
Mezzmo, a commercial home entertainment software package designed for Windows.
MiniDLNA DLNA server for Linux that works with Samsung LE40B650, Sony Bravia 46W4500, XBOX360 and PS3
myiHome, a free Java based UPnP AV MediaServer for Windows, Linux & Mac.
Musicmatch Jukebox, a commercial audio player for Windows with uPnP audio streaming support.
MythTV, an open-source HTPC and PVR software for Linux, with a built-in UPnP AV MediaServer.
Nero MediaHome 4, a commercial media server for Windows with realtime transcoding and live TV streaming functionality. Free Trial version is available. (Not available to United States)
pDLNA a free UPnP/DLNA MediaServer written in Perl
PlayOn, a commercial UPnP/DLNA media server for Windows, supports PS3/360 & includes a transcoder for streaming web video.
Plex Media Server A free video, music and photo server for Windows and MAC
PS3 Media Server (home page), a free Cross Platform Java based UPnP DLNA server especially Good for AVC and other current HD media codec players PS3/Xbox,Popcorn Hour, Bravia,Samsung Wiselink, Freebox HD,and other DLNA equipped TVs etc.,with on-the-fly transcoding.
PyMedS, a free Python based media server. Dynamically looks in tar/zip/rar files, supports ShoutCAST streaming.
Serviio, a free DLNA/UPnP media server for Windows, Linux and OS X that works with various TVs, Xbox 360, PlayStation 3 and most other DLNA/UPnP devices. Supports on-the-fly transcoding, online metadata retrieval and many more.
SimpleCenter, a Java based UPnP AV MediaServer for Windows.
TVersity, a free DLNA/UPnP MediaServer with strong device support and on-the-fly transcoding.
TVMOBiLi A shareware DLNA/UPnP Media Server for Windows, Mac OS/X and Linux with on-the-fly transcoding support via VLC for video formats and FLAC for audio formats.
TVShare, a commercial DLNA/UPnP MediaServer with on-the-fly transcoding using VLC, specifically designed for Directv receivers.
TwonkyMedia Server, a commercial cross-platform UPnP media server for Windows, Linux and Mac. PC version supports background transcoding using FFmpeg or VLC.
UIStream , a commercial UPnP media server for MS Windows, supporting XBox 360, Playstation 3 and most other DLNA/UPNP devices. Supports realtime on-the-fly transcoding for audio, video and bitmap files. Free trial available.
uShare, a lightweight UPnP A/V and DLNA Media Server
Whitebear, a Media Server for Windows that provides a DLNA/UPnP front end to Logitech's Squeezebox Server. Includes also Whitebear Media Renderers (see below) for all Squeezebox players connected to the Squeezebox Server.
Wild Media Server (UPnP, DLNA, HTTP), a media server for Windows, Wine (Linux), CrossOver Mac (MAC OS), individual device settings, transcoding, subtitles, restricted device access to folders, uploading files, Internet-Radio, Internet-Television, Digital Video Broadcasting (DVB), etc.
vp-upnp A free UPnP Media Server for Windows.
Vuze, an open-source Java-based BitTorrent client which contains MediaServer plugin.
Windows Media Connect from Microsoft - free UPnP AV MediaServer and control point (server and client) for Microsoft Windows
Windows Media Connect (WMC) version 2.0 can be installed for usage with Windows Media Player 10 for Windows XP
Windows Media Connect (WMC) version 3.0 can be installed for usage with Windows Media Player 11 for Windows XP
Windows Media Connect (WMC) version 4.0 already comes pre-installed on Windows Vista with its WMP version 11
Yazsoft Playback, a UPnP server for Mac OS X, allows you to share your media with any PlayStation 3, Xbox 360, or other UPnP compatible device. It automatically integrates with iTunes, iPhoto, Aperture, Photobooth, Adobe Lightroom 2 and more.
XBMC Media Center (formerly "Xbox Media Center"), a cross platform open source software media-player/media center for Apple TV, Linux, Mac, Windows, and the original Xbox.
XBMC built-in UPnP client and UPnP MediaServer code are from Platinum UPnP C++ SDK (open source under GPL)