Not willing to lose market-share, Adobe released a free (as in beer) beta of their photo workflow management application Lightroom. It’s not quite as slick as Aperture— and much slower. The big hit for me is that it does open D200 RAWs natively.
I have directories full of D200 photos I’m waiting to import into Aperture as soon as it’s supported (heres to hoping for 10.4.4 tomorrow at MacWorld). Since adopting the Aperture workflow, it kills me to go back to the iview/nikon capture/photoshop dance. Lightroom and Aperture each have their own major weaknesses and strong points. It’s going to be a good showdown as both develop out of beta status.