FluidDATA is a search that let's users search spoken audio by phrase or mention
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! :)
Utters.io is a site that lets you search for phrases in videos throughout YouTube