"The main thing that makes it different is its approach. One
clue is the subtitle on the web page is A notebook you can
organize, back up and share!. The traditional way that groupware
suites work is that they are one place where you put a whole bunch
of different things but each type of thing (appointment, to-do,
...) has a separate cubbyhole. That means you first think about
what you have and then put it in the appropriate place.
"Chandler encourages you to think about your things first, get
them scribbled down and then organize them. To make this effective,
of course, the organizational step needs to be logical and easy.
Well, it is. They is no problem, for example, putting an existing
note into multiple lists and/or multiple types of lists."