I switched from onenote to evernote a very long time ago to get away from microsoft office. After evernote went to shit, though, I didn't have any real alternatives so I went back to onenote. I wonder if the newest free version runs in wine.
Microsoft already discontinued OneNote (the Office version). The last version will be 2016. They're offering OneNote as a modern app now that requires a Microsoft account and syncs to the cloud - and of course it doesn't have equivalent functionality.