VLC Media Player - VLC is a free and open source cross-platform multimedia player and framework.
beaTunes - Smart software for library management, music analysis, and playlist creation. For Windows and macOS.
foobar2000 - An advanced freeware audio player for the Windows platform.
TuneUp - TuneUp makes your music fresh and clean!
Winamp - Winamp is a media player that allows users to play multiple-file formats, arrange media in a varied file-management system, and play unique media with AAC encoding.
KeyFinder - Key estimation software for DJs