P3X OneNote Linux is, actually, an independent browser window for the online OneNote. You can use this program without having to clutter your browser. The main functions are:
* that is independent from any browser, as it works in it's own process
* it provides a tray, that allows you to close your browser while it keeps running in the tray
* the data is cached and is faster than always opening a new window.
* it allows you to sign in with the corporate or the personal login
* when there is a new update, it auto updates itself.