Microsoft Onenote Portable ((free))

For true cross-platform portability without the need for a USB drive or local installation, OneNote for the web is your best bet.

If you absolutely require an offline, fully native portable note-taking application that installs directly to a USB drive without licensing hurdles, consider these open-source alternatives: 1. Joplin Portable Microsoft Onenote Portable

While there is no standalone "Microsoft OneNote Portable" app from Microsoft, you can still achieve portability by using several effective methods. Microsoft traditionally offers OneNote as an installed desktop app, a pre-installed Windows 10 app (which is being retired in October 2025), a mobile app, or a web-based version. For true cross-platform portability without the need for