I have been playing around with ScrumWorks™ Basic Edition which is a free project management tool for Scrum and other agile methods.
ScrumWorks™ Basic features are:
- Product backlog and release management
- Categorization of backlog items using themes
- Sprint task tracking for teams
- Impediment tracking
- User and team manager
- Excel import/export
- Web Services API
- Automated and manual database backups
It was easy to install. Just download the file, unzip it and run the installer. Online help is good and it is pretty easy to understand if you know the basic terminology of Scrum.
More information and downloads can be found on the Danube Technolgies website.