What software do you use to manage Scrum software development? We've tried Tackle and VersionOne (both free) so far and they are good except for the fact that it's difficult to track work in progress. For example, if I have a task that I estimate will take me 8 hours to complete, I've done 4 hours of work with 4 hours remaining, the task is always reported as 8 hours remaining until it is marked complete, at which time it falls to zero. I'd like to use a tool that will allow me to take an accurate work at the teams WIP at the end of each week and see how much impact that work has had towards a deadline along with completed tasks.
Thanks for your input!