Move to Apple Music - Convert your Spotify playlists for Apple Music
Kobo Audiobooks - Experience the joy of being told a story
Audioship - Upload audio to YouTube or Facebook
Prologue - Audiobook player on iOS for Audiobooks hosted on a Plex media server
Playlist Machinery - Tools that help you create & organize your Spotify playlists
Scribd Audiobooks - Unlimited access to 30,000 audiobooks