Sidify Music Converter - Sidify Music Converter for Spotify is a popular tool used to convert Spotify music to MP3/AAC/WAV/FLAC/AIFF/ALAC. It keeps original audio quality and ID3 tags after conversion.
TunesKit iBook Copy for Mac - Easily remove DRM protection from Apple iBooks and copy DRM protected iBooks to DRM free ePub files.
TunePat Spotify Converter - TunePat Spotify Converter is specially designed for converting Spotify songs to MP3/AAC/FLAC/WAV/AIFF/ALAC.
Kingshiper MP3 Converter - Kingshiper MP3 Converter is a reliable and easy-to-use tool to convert your music files into MP3 format in seconds.
AudFree Spotify Music Converter - Download Spotify songs as MP3 for offline listening on any device even without premium subscription.
OpenAudible - OpenAudible Project Page