FocusTube
I love online learning, but I hate how long it takes to just watch one online lecture or course (especially slow speakers).
Even watching videos at 2x speed doesn't help me, because I end up rewinding several parts or missing important points.
Thus I created FocusTube. FocusTube uses computer vision to determine how attentive a user is and automatically changes video playback parameters to maximize the user's learning.
It simply allows you to learn more in less time. You can try FocusTube here.