SimilarChannels - Find similar YouTube channels, discover new channels based on your interests, create your own YouTube collections with your favorite channels.
Flipboard - Your Personal Magazine. Find, follow and flip stories that change your world.
YouTube Trending - Making it easier to find viral videos
Blackpills - Netflix for short series
Vidooly - Get deeper analytics of any YouTube channel or video
Spicetify - Command line tool to customize Spotify client