This is the software publisher’s description.

Project: Lightroom is Adobe’s effort to engage the professional photography community in a new way, giving you the opportunity to kick the tires and shape the feature set of a new tool being created just for you. Ultimately, we want Lightroom to be truly built from the ground up by photographers, for photographers, helping solve your unique workflow challenges.

Lightroom is your professional photographer's essential toolbox, providing one easy application for managing, adjusting, and presenting large volumes of digital photographs so you can spend less time in front of the computer and more time behind the lens.

There is also a Mac version of Adobe Lightroom available.

This is the latest version of Adobe Lightroom (v2) and contains a host of new features, including a local adjustment brush, enhanced photo organisation tools, multiple monitor support and much more.