Adobe Photoshop Lightroom 3 Beta is a free download (sign up for beta key) good until Apirl 2010.
Anyone Can Try Out the New Lightroom 3 Beta

"The Lightroom 3 beta program is available to the public, so that means anyone with an Internet connection can download it and start putting it to the test. You do not need to own (or have tried) a previous version of Lightroom. The version of Lightroom 3 beta software available for download is offered in English only. You can download the beta and use it until the product expires. The current Lightroom 3 public beta will expire on April 30, 2010.

Please note that the software available in this public beta is not a final release. The product quality and the features are still being developed and completed. Like any beta release, usage of this product carries more risk than using a shipping product. We’ve tested the product thoroughly and do not anticipate serious issues but for critical work, you should rely on the shipping version."

http://labs.adobe.com/technologies/lightro...5-2-0-ARTICLE-0