Adobe Photoshop Lightroom software is a digital darkroom and efficient assistant designed for serious amateur and professional photographers. With Lightroom, you can organize, enhance, and showcase your images all from one fast and nimble application that’s available on Macintosh and Windows® platforms.

Lightroom 3 beta builds on the vision of the very first Lightroom beta. From day 1, Lightroom was designed for photographers and by photographers to help them focus on what they love—the art and craft of photography. Lightroom provides photographers with an elegant and efficient way to work with their growing digital image collections, bring out the best in their images, and make an impact from raw capture to creative output, all while maintaining the highest possible quality each step of the way.

Read more on Adobe Labs: click here

Adobe Lightroom 3 beta learning centre: http://www.photoshopuser.com/lightroom3/