YouTube™ Time Tracker is an open source Chrome Extension that tracks time you watch Youtube. Unlike other extensions it doesn't track anything but time and keeps data only inside your browser.
This extension allows you to take control of your time and reduce distractions while browsing YouTube by hiding recommendations, comments (and live chats) trending/subscriptions pages end walls, and banner ads. These options are heavily customizable!
Invideo is the first chrome extension enabling you to search inside of Youtube videos. For the techies out there, it also finds keywords in the video using NLP. Comment if you like it and don't hesitate to share it with friends! I know they'll love this just as much as you will! :)