A few days ago, Gorillized announced a utility to import Circus Ponies notes into their Outline. When you join the “waitlist” for this utility, you are offered the opportunity to inform the developer about the Notebook features that are most important to you1 and you will be notified when the import utility appears. They also offer a 30% discount off the usual price ($40) for Outline for Mac. The iPad version costs $10. Both versions support Dropbox, iCloud Drive, OneDrive, and Box. I have no experience with Outline,2 but I will surely try the free trial (14 days) when the time comes.
I just discovered that Circus Ponies Software ceased to exist. Their Notebook programs are no longer available. Their site is reduced to a short note. Their users forum vanished.
This is bad news for all of us who rely on their eminent Notebook for outlining, note taking or note keeping. I myself have more than 10 years of notes in my notebooks. Notebook 4 currently works fine, but I fear that it will no longer do so after the next OS X upgrade. I will start looking for an alternative. If you use NoteBook, you may want to do so too.
You can find more information about Notebook and the way I use it on my tech tools page.
One very useful feature of Circus Ponies’ NoteBook is the possibility to tag cells with keywords. Unfortunately, this feature is only partly explained in NoteBook Help.