Picasa is a free photo organizing and editing program from Google. You can download Picasa at http://picasa.google.com/download/index.html.
Picasa
will let you organize the photos on your hard drive into a single library, move
photos across your Microsoft Windows file tree, add captions to your pictures,
pan and zoom, and use 12 new lighting and color effects. Picasa’s photo-editing
tools let you adjust highlights, shadows, fill lights, and color temperature.
You can add effects such as (sepia, black and white, and soft focus), crop,
straighten, remove red-eye, and more.
Picasa's Timeline allows you scroll through a chronological catalog of your photos, change filenames, key in captions, and add ratings to your favorites, and locate files by keywords, ratings, and dates.
You can save photos to an external drive, burn them to a disc, or upload them to popular photo-sharing Web sites.
To learn more about Picasa’s features visit http://picasa.google.com/features/index.html.