There are many possibilities with photo editing software that can improve the quality decent photos - you can crop, resize, rotate, but you also can add fun effects and change the color balance or exposure.
Picasa - A photo editing software that was released by Google, where you can edit photos, share, publish albums and even add tags from Google Maps. You do not need to use Picasa to upload something to Google's servers. This is just an optional thing. You can use Picasa to convert color photos Black and White, produced a beautiful banner for your weblog, or add pictures to an image, retouch annoying blemish or mark of the images and photos to share with friends and family without having to send it via email.
Photobie - Besides editing photos, you can add pictures and animation templates. There are also online tutorials and online communities photographer to help you by providing tips, tricks and secrets through the official site.
Adobe Photoshop Album Starter - Adobe superb when it comes to editing photos and video professionals, but they also come with a hefty price tag. If you prefer something free, chose to Album Starter.
FotoFlexer - powerful web-based photo editing allows you to air brush, modify, retouch, distort, morph photos and add other fun effects. It works with both photos and photo uploads that have been on the internet. For people who edit photos newbie, is also very easy to use.
