VLC Media Player - VLC is a free and open source cross-platform multimedia player and framework.
MPlayer - MPlayer is a movie player which runs on many systems (see the documentation).
Windows Media Player - Get information about Windows Media Player and other Windows Media technologies.
Kaffeine - Kaffeine is a media player for the KDE desktop environment.
Pretty Good Music Player - Music player that focuses on basics: rock solid music playing.
DVDFab Media Player - DVDFab Media Player is a full-featured video player that comes with the support for Blu-Ray, DVD, and HDR10 video support at up to 4K.