Lightbox is an easy-to-use, inexpensive photo management application designed from the ground up for serious photographers. Unlike other photo applications, Lightbox doesn't require you to keep track of what folders you put your images in--it manages everything about an image, including the thumbnail and original raw file, for you. And it can even do so on multiple hard drives! Let Lightbox manage your photos, and don't ever forget where you stored an image again! Lightbox also has support for:
Importing from iPhoto™
Emulating iPhoto for use in iDVD™ 3 and iMovie™ 3
Raw conversion
Previewing some types of raw files*
Print contact sheets
Multiple storage locations and albums
Searching by EXIF data
Custom metadata--and searching by it
Adobe® Photoshop® integration--Lightbox works flawlessly with the Adobe Camera Raw plugin!
Backup to tar.gz
Offline viewing (relocate images to CD/DVD and still search for them)
Directly burning to a CD or DVD
Archiving originals
Customized workflows--e.g. copy photos into the storage location or leave alone?
And more!