Microsoft Onenote Portable _best_ -

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

Still, for freelancers, students hopping between labs, or anyone who distrusts subscription-based memory, OneNote Portable is a cult classic. It’s Microsoft’s note-taking powerhouse, stripped for speed, stuffed into a pocket, and ready to capture your next lightning bolt of an idea—even in airplane mode. Microsoft Onenote Portable