Yout - YouTube to Mp3 Converter
Replayify - Create playlists from your most played Spotify tracks
CONV. - Convert YouTube video to MP3, GIF or MP4
SpotiMy - Play/Pause and Next/Previous functions for Spotify directly on your Menu Bar!
SoundCloud Go - Your favorite music and new discoveries, offline and ad-free
Muzzy - it’s a tiny and gorgeous iTunes companion that lives on your menu bar. For Mac OSX, its free!