Qmmp!

Clementine is a cross-platform free and open source music player and library organizer. It is a port of Amarok 1.4 to the Qt 4 framework and the GStreamer multimedia framework, focusing on a fast and easy-to-use interface for searching and playing your music. It is available for Unix-like, Windows and Mac OS X.

Winamp is a media player for Windows and OS X developed by Justin Frankel and Dmitry Boldyrev by their company Nullsoft, which they later sold to AOL, who sold to Radionomy in January 2014. Since version 2 it has been sold as freemium and supports extensibility with plug-ins and skins, and features music visualization, playlist and a media library, supported by a large online community.

Freeware Winamp-like media player, based on BASS audio library with support for large number of formats and playlists. It works with multiple playlists immediately (tabbed window), allows creation of bookmarks and also has a playback queue. Crystal-clear sound, technology of reproduction essentially differs from Winamp and WMP.A maximum of functionality from a minimum of resources.The minimal consumption of system resources, lighter than WinampMultilingual support.Adjustment of global and local hot keys (patterns from WinAmp and WMP).Support of plug-ins, skins and custom icons.Cue-Sheets and Last.fm built-in support. »

Audacious is an advanced audio player. It is free, lightweight, based on GTK+, runs on Linux and many other *nix platforms and is focused on audio quality and supporting a wide range of audio codecs.

Rhythmbox is an audio player for Linux that plays and organizes digital music. Inspired by Apple's iTunes, it is free software that is designed to work well under the GNOME Desktop using the GStreamer media framework.

Amarok is a powerful music player for Linux, Unix and Windows with an intuitive interface. It makes playing the music you love and discovering new music easier than ever before - and it looks good doing it!

Play your music and videos. Stay entertained and up to date with podcasts and video podcasts. Discover new music with Last.fm radio. Sync your G1 phone, iPod, and other devices.

DeaDBeeF is a lightweight graphical music player created for easy playback of music and management of playlists. It supports major audio codecs and tags, global hotkeys, gapless playback, streaming audio, command line control, and has an 18-band equalizer. For the full list of features, please check the official website.

Quod Libet is a Gapless GTK+-based audio player written in Python. Its designed around the idea that you know how to organize your music better than we do. It lets you make playlists based on regular expressions (dont worry, regular searches work too). It lets you display and edit any tags you want in the file. And it lets you do this for all the file formats it supports - Ogg Vorbis, FLAC, MP3, Musepack, and MOD.

Poweramp is the new powerful music player for Android.

Exaile is a cross-platform music manager and player for GTK+ written in Python and is easily extensible via plugins. It incorporates automatic fetching of album art, handling of large libraries, lyrics fetching, artist/album information via Wikipedia, streaming internet radio, Last.fm submission support, and optional iPod support via a plugin.

Music Player Daemon (MPD) is a flexible, powerful, server-side application for playing music. Through plugins and libraries it can play a variety of sound files while being controlled by its network protocol.