Mingle

Mingle is a software application that helps you and your team manage Agile IT projects.
It supports software delivery by providing the whole team with a single place to share all project output using a framework based on over 7 years of ThoughtWorks' Agile experience.

Mingle provides project intelligence for teams that need to make real-time decisions based on Agile metrics collected from everyday activities.

I've had a play with Mingle recently and so far it looks like a great piece of software, even though it is still an alpha release. It is developed and supported by ThoughtWorks Studios. You can register you interest in Mingle which I did and was given access to download the software the next day.

Mingle uses MySQL or PostgreSQL as a back end database and the installation was simple and problem free. It integrates with Subversion for tracking your code against the requirements

Well worth checking out Mingle if you are looking for a tool to help you with agile project management and centralising your project information