I've looked at many of them including BaseCamp, Mavenlink, Pivotal, and we're using Asana. We also use Streak and Boomerang. I have not worked with Trello but will definitely be checking it out. These tools are all great but believe it or not, when I need to do something really quickly a Google doc spreadsheet does the job. We're a small team and need to be focused on getting great product out. Tools that require a lot of work are time sinks and without proper care and feeding they start to bloat with items that are dragged along week-to-week. Anyone get "reminder" emails with tasks that are open but are no longer relevant or just not closed out?