Information Organizer Overload

Where are all these information organizers for the Mac coming from these days? In the last few months or so, we got Yojimbo, EagleFiler and now Keep It Together. Did Apple release some API that makes creating these organizers so dead-simple that all that needs to happen is have a pretty interface wrapped around it? Or does the market really need this many applications that all pretty much do the same thing and look alike?

Seriously… look at these screen shots (all taken from the respective websites):

Yojimbo
Yojimbo

EagleFiler
Eaglefiler

Keep It Together (KIT)
Kit

Can they look anymore alike?

Of course, it would be remiss of me not to note that the granddaddy of all these information organizers is probably SOHO Notes, which, unsurprisingly, has a similar interface to all the others.

I’d love to find out if this surge of information managers is market- or technology-driven.