HBud
HBud is a free and open source simple music/video player and karaoke application
GridPlayer
GridPlayer is a free and open source, cross-platform, simple VLC-based video player that can play multiple videos simultaneously
Clapper
Clapper is a free and open source, simple and modern media player for Linux GNOME
Dragon Player
Dragon Player is a free and open source, simple and minimalistic media player for Linux
Totem
Totem is a free and open source, simple movie player for the GNOME desktop
Parole
Parole is a free and open source, modern simple media player for the Xfce graphics environment
ExMplayer
ExMplayer is a free and open source mediaplayer with 3D/2D video playback support, tools like audio converter,media cutter and audio extractor
Glide
Glide is a free and open source, simple and minimalistic media player
Haruna
Haruna is a simple and customizable video player with the ability to play videos from YouTube and PeerTube. A free and open source program
MoonPlayer
MoonPlayer is a free and open source video player for playing and downloading online videos from YouTube, Youku, and iQiyi, as well as local videos