iMazing - iMazing lets you transfer music, files, messages, apps and more from any iPhone, iPad, or iPod to a computer, Mac or PC. Manage and backup your iOS device simply without iTunes. (was DiskAid)
Sayonara Player - Sayonara is a simple but nice audio player and holds a lot of features like a library, id3 tag...
i-FunBox - General file management software for iPhone and other Apple products
Pi MusicBox - Pi MusicBox is a great music platform where you can create songs and is the only streaming music player for Spotify, Google Music, Podcasts, SoundCloud, Webradio, and others.
iExplorer - iExplorer lets you easily transfer music, playlists, text messages, files and more from any iPhone, iPod, or iPad to a Mac or Windows computer and iTunes.
Roon (Music Player) - Roon is a music playing application for audiophiles