Microsoft OneNote is a note-taking and information management application that is part of the Microsoft office 365 suite of applications. Users can store text and images in free-form documents that can be kept private or shared with others. Notes are organized into separate metaphorical notebooks, sections, and pages. Multiple notebooks can be created to represent different topics or projects, such as having two notebooks to separate work and personal notes.

OneNote is available as a native application for Windows, macOS operating system and most mobile devices. The Windows version does permit more features than does Mac, such as the ability to insert media content, but OneNote is still usable on Apple devices. It’s also available as a cloud-based web application through Office 365, so it can be accessed anywhere with an internet connection.