Google keep has been around a long time. For those with organisational needs it is brilliant in lots of ways. Colour helps to differentiate the subjects but you can also add labels and make that a way to organise your page. You can have to do lists with check boxes and you can draw. Brilliant for students who want to collaborate together it would via Google Suite so would interface with Google Docs as well. You can archive when the current work is complete. I confess I am not good at doing this!
Finally, it is free and on all platforms through Google Chrome. Which means I can access it anywhere with the webaddress:-