I am working on a very simple browser extension that allows you to take notes right on youtube. It is open source, offline and everything is locally stored.

Here are the links.

Chrome store: https://chromewebstore.google.com/detail/video-notes/phgnkid...

Firefox store: https://addons.mozilla.org/en-US/firefox/addon/video-notes-f...

I actually would love some feedbacks and suggestions from someone here :)