VLC Media Player - VLC is a free and open source cross-platform multimedia player and framework.
DVD Player+ - DVD Player+ is a FREE High-quality and powerful DVD Movie & Media Player, specially designed for playback of your CD's, DVD's, Blu-Ray or VCD's. It also provides the user with extra info for the current Movie from imdb (plot, poster, trailers, etc).
MPC-HC - MPC-HC, the free, open source media player for Windows. DownloadsNote. Supported Operating Systems: Windows® XP SP3 .
QuickTime Player - Watch Internet video, HD movie trailers, and personal media clips.
SMPlayer - SMPlayer is a free video and audio player for both Windows and Linux that allows you to play almost all media files without having to install additional codecs. Read more about SMPlayer.
CyberLink PowerDVD - PowerDVD Series - The Ultimate Entertainment Solution.