If you're looking for a lightweight solution to help manage the Agile/Scrum process because you can't use Rally, Jira, etc you may want to take a look at:
It worked rather well for us on a team of around 8 folks. I even setup some shell scripts and a cron job to keep a back-up on someone else's computer sync'ed up every couple of hours in case we lost the primary instance. Poor man's HA =)
