YT Music - An unofficial Mac app for YouTube Music
Sleeve - Your currently playing track displayed right on your desktop
SoundCloud Desktop - Use your media-keys ⏮⏯⏭ with SoundCloud
Soundbar - A lightweight SoundCloud player for Mac
YouTube Music - YouTube Music is a streaming app primarily designed for Android and iOS mobile devices. The app lets individuals search for music from their favorite artists, enjoy playlists, and access 30 million musical tracks.
SoundNode - SoundCloud desktop app (OS X, Windows, Linux)