Picasa is free photo editing software from Google that makes your pictures look great.
Picasa has made it easier to organize your photos without opening your browser. Apply Picnik’s photo-editing awesomeness to your photo and save it back to Picasa. Then make a Face Movie out of your portraits. You'll also find an amped up properties panel and a new Batch upload option so you can upload your entire photo collection. Sharing your best photos with friends and family is as easy as pressing a button.