+1 for Pivotal Tracker. One of the most polished UIs I've worked with. It's a pleasure for development teams to use; I use it for both freelancing and the day

+1 for Pivotal Tracker. One of the most polished UIs I've worked with. It's a pleasure for development teams to use; I use it for both freelancing and the day job. Also helps management have its finger on the pulse of progress, and have an accurate answer to the question "when will X be done?"