Microsoft OneNote is a program for free-form information gathering and multi-user collaboration. It gathers users' notes, drawings, screen clippings and audio commentaries. Notes can be shared with other OneNote users over the Internet or a network.

Previously, OneNote was[5] available as a part of the Microsoft Office suite. Microsoft also publishes versions of OneNote as a free, standalone application for macOS, Windows 10, iOS and Android.[6] Microsoft also provides a web-based version of OneNote as part of OneDrive and Office for the web; this version enables users to edit notes in a web browser.