Are there any Open Source alternative to Adobe Lightroom?

Answer 1

There are no direct alternatives to Lightroom that are open source.

There are a few image viewers/organizers/editors mostly as separate programs, but Lightroom is better (and I still use PhotoShop).

Lightroom is a very good program and I would recommend just going out and buying it rather than spending any time searching for something that will most likely be far inferior.

Amazon.com sells it, and Adobe is offering a free download for the 1.1 upgrade for registered users.