Microsoft OneNote is a digital notebook application developed by Microsoft that organizes notes into notebooks, sections, and pages. It supports free-form typing, handwriting, drawing, audio recordings, and embedded files, and lets users clip web content or scan documents directly into a page. Notes sync across devices through a Microsoft account and OneDrive storage, and multiple people can co-edit the same notebook in real time.
OneNote is aimed at students, professionals, and teams who want a flexible space for meeting notes, research, and project planning that integrates with the wider Microsoft 365 ecosystem, including Outlook, Teams, and Word. It is included free with a Microsoft account and comes preinstalled on Windows; additional storage and premium Microsoft 365 features are available through subscription plans.
The app is available on Windows, macOS, iOS, iPadOS, Android, and the web, with offline access that syncs automatically once a connection is restored. A Microsoft Graph API lets developers build integrations with OneNote notebooks.