I moved over 35k photos from Aperture to Photo Supreme for organization/metadata and DxO for editing. Photo Supreme will read Aperture libraries and much of the metadata. The capability was pretty crude when I did it (mostly relied on it to recreate my hierarchical keywording system), but it's come a long way. Best part is that the database is only for speed—everything gets stored in the image files themselves or sidecars.

DxO is pure magic. It's been a joy going back and reprocessing my images—they look so much better now. The Clear View slider does wonderful things on landscape shots.

A nice touch is that Photo Supreme understands basic DxO edits, so things like rotation and cropping get reflected in the thumbnail.