Bookmark It - Create awesome notes on YouTube videos
mention - Media monitoring made easy with Mention. Create alerts on your name, brand, competitors and be informed in real-time of any mention on the web and social networks
Sidenote - Timestamped notes on YouTube videos
Google Alerts - Google Alerts will send you email or RSS updates of the latest relevant Google results (web, news...
Video Search for YouTube - Search any YouTube video like a document.
KUKU - KUKU.io is a powerful social media marketing and analytics platform.