This will probably apeal to one person in this forum, but one of my favorite free programs was just improved.
Picasa3 Beta is now available for download. Actually I think it compliments DPP nicely.
It is great for those that end up working with JPGs from the start or after RAW as the edits to a JPG are not saved untill a hard save and when they are the original is backed up and hidden. You can tweak images and when you exit Picasa changes are written to an ini file, not the image, until you either save or export.
This means, for the most part, non-destructive JPG editing.
http://picasa.google.com/
