My dear friend Marko Wenzel has written an excellent review about DEVONthink and how to use it as a Zettelkasten note archive.

I have used DEVONthink myself a few years ago, but I think Marko's expertise has far outpassed everything I ever knew about the app. I hope he'll show us the various preview and link building scripts he created, too, because they make his workflow truly unique.