XBMC Media Center is an open source media player an entertainment hub.
TubeHunter Media Center 4.1 is a multiformat video converter.
Media Center Master, Inc.
It allows you to manage and organize your multimedia content.
Extremely simple tool to convert your MP4 UTube files into Windows Media videos.
PCTV Package - Windows Media Center is a fully featured TV viewing application.
K Media Center is used to manage karaoke playlists and HD/DVD/VCD movies.
With Media Center Control you can control the Windows Media Center.
Air Media Center is a multi-platform mobile media center.
Media Center Themer can customize your look of Media Center.
Emby for Windows Media Center is a free to use plugin for Media Center.
Goo Media Center is a media player using Mplayer that plays all media file types.
Media Browser Team
Media Browser is a media aggregator plugin for Media Center.
XBMC Media Move is a Media file automated dispatcher for XBMC Media Center.
Watch streaming videos, radio, live TV, and media files on a media center.
Windows Media Connect is the predecesor of Windows Media Center and Home Server.
Media Control is a plugin for Microsoft Media Center.