For the right purposes and reasons, this is very useful to me...

OK, right up front, let’s be clear about why I use Outline and like it a lot-

It’s a “work-a-like” for Microsoft One Note, and matches key featuers and functionality while giving adiditional options for how you sync it to other devices.

I have MS One Note but rarely use it anymore. I DON’T use Outline to open and work with One Note files, so I can’t comment on compatibility. Working with it’s own files and native file mode, I have not had any issues or problems. I use this extensively for my work (I’m an engineer) and for many kinds of peronal projects, too. I the interface and ways for organizing projects to work very well, importing graphics or complete PDF’s has some nice options (I prefer the mult-page mode, as it allows me to jump around between pages.

Clean, classy, and productive. I like Outline a lot.

Jonmarsh about Outline: Notes for OneNote