Downloadable for free, the program lives up to its Google reputation. It's easy to use and powerful, processing thumbnail images quickly while searching your hard drive for lost photos. Picasa does not, however, work well with hard drive organized folders, displaying only the folder shell structure and not the thumbnails themselves, although uploading the images directly to the online program can circumvent the issue. The program offers a variety of editing options which you can play with without worry because it retains the original image throughout.