TubeLister - Generate a YouTube playlist from your opened tabs.
Playlist Machinery - Tools that help you create & organize your Spotify playlists
DiskyT - Youtube playlists done right
Magic Playlist - Get the playlist of your dreams based on a song
Tuned Rocks📺 - Discover🔎 curated Youtube videos 24/7
Noiseblend - One-tap music for every occasion, with Spotify Premium