Today I learned that not everyone knows Google Keep, which could have lead to a terrible "Google's Best Kept Secret" pun, but let's not go there. Instead, I suddenly became afraid that it will become another product google abandons.
What does Keep do? It allows users to take notes and make lists. It's accessible on a browser and in an app, and the two sync pretty much immediately. For visual people, which I am not, you can give every note it's own color. You can pin notes, you can add collaborators. You can add a drawing or an image.