Best Photo Management Software 
What do you use to manage and sort your digital photos?
Resources
Picasa is software that helps you instantly find, edit and share all the pictures on your PC.
Adobe® Photoshop® Elements software combines power and simplicity to help you do it all. Edit and enhance your photos by fixing common flaws instantly or using advanced options for more control.
Flickr is an online photo management and sharing application.
View, process, edit, organize, catalog, publish, and archive your photo collections with the precision and control demanded by photographers around the globe.
iPhoto is a Mac OS X application for organizing your photos on your Mac. It gives superior control and manages large amounts of images quickly and easily.
iTag is a free tool that adds title, description and keyword tags to your jpg photos.
Great free photo-tagging tool that supports EXIF and IPTC with batch updating.
Integrates EXIF and XMP/IPTC viewing and editing into Windows Explorer. Incredible, free, and one of the very few non-Adobe programs to handle XMP correctly. Batch editting/tagging/renaming available, though missing a couple useful batch features.
Free basic manager with EXIF and IPTC viewing and editting and batch operation. Competant program and very popular.
Import & export from EXIF and IPTC, excellent organization and search features, archive to CD or DVD while keeping thumbnails on disk, and many other advanced features for the price.
A competant photo manager MUST have full support of EXIF, IPTC, and ideally XMP meta photo information.