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Dragon Player
Dragon Player is a multimedia player where the focus is on simplicity, instead of features. Dragon Player does one thing, and only one thing, which is playing multimedia files. Its simple interface is designed not to get in your way and instead empower you to simply play multimedia files.
Media Player Classic
Media Player Classic Home Cinema (mpc-hc) is considered by many to be the quintessential media player for the Windows desktop. Media Player Classic Qute Theater (mpc-qt) aims to reproduce most of the interface and functionality of mpc-hc while using libmpv to play video instead of DirectShow.
Persepolis
Persepolis is a download manager & a GUI for Aria2.
Curlew
Curlew is an easy to use, Free and Open-Source Multimedia converter for Linux.
Jitsi Meet
Jitsi Meet is an open-source (Apache) WebRTC JavaScript application that uses Jitsi Videobridge to provide high quality, secure and scalable video conferences. Jitsi Meet in action can be seen at here at the session #482 of the VoIP Users Conference.
GTK-gnutella
gtk-gnutella is a server/client for the Gnutella peer-to-peer network.
Shredder
finds space waste and other broken things on your filesystem and offers to remove it.
Videos
Also known as Totem, Videos is a movie player designed for GNOME.
qStopMotion
qStopMotion is a fork of stopmotion for Linux.