OneNote is a digital note-taking app that provides a single place for keeping all of your notes, research, plans, and information — everything you need to remember and manage in your life at home, at work, or at school.In OneNote, notebooks never run out of paper. Notes are easy to organize, print, and share, and you can search and find important information quickly, even if you forget where you've originally captured it. Best of all, your notebooks are stored online so you can easily get to them on any of your mobile devices.