If you used or remembered the skeumorphic sibling apps Circus Ponies Notebook and Aquaminds NoteTaker (going back to their shared history as an app for the NeXT Computer and then the earliest Macs), you might be interested to know that NoteTaker 4.0 just appeared in the Mac App Store from its original, longtime developer, Aquaminds. $29.99, Mac-only.
I was surprised to see mention of OneNote and Curio in the article from 2004!
Interesting. Though it seemed outdated, I was intrigued and bought NoteTaker 4. I like the ability to create clipping services that send selections of web pages and documents to a specific page in a notebook (for apps that support Services, which most do). A very granular type of “share” feature that might be useful.