YouTube Trending - Making it easier to find viral videos
Needl Analytics - Analytics as automated insights
SimilarChannels - Find similar YouTube channels, discover new channels based on your interests, create your own YouTube collections with your favorite channels.
Metric.live - Real-time and advanced periodic alerts for Google Analytics.
Vidooly - Get deeper analytics of any YouTube channel or video
Quill Engage - Quill Engage takes the confusion out of Google Analytics reporting. Sign up for free and start getting website reports delivered to your inbox.