Playlist Machinery - Tools that help you create & organize your Spotify playlists
Vidlis - Create music playlists from YouTube videos.
Poolside FM for Mac - An infinity pool of summer sounds in your Mac menu bar
Tuned Rocks📺 - Discover🔎 curated Youtube videos 24/7
Listen for Mac - Add songs to Spotify playlists using keyboard shortcuts
OrganizeTube - Create video playlists from Youtube, Vimeo and other sources