Stumbled across this software today.
Photo Mechanic

Seems to be mainly used by working pros as a very fast import/rating/selection tool.
Lets you look through a large number of files & quickly & easily pick & rate keepers

Editing seems to be limited to housekeeping type edits - rotations, resizing, renaming, watermarking etc, so you have to export to another program for further editing

Anybody use it?