In looking at it, it looks much more generic than Pivotal Tracker (which I'm a current heavy user of and absolutely adore). Pivotal Tracker is very focused on

In looking at it, it looks much more generic than Pivotal Tracker (which I'm a current heavy user of and absolutely adore). Pivotal Tracker is very focused on being an agile workflow tool. You enter a card, estimate it, start it, deliver it, and then it gets accepted or rejected. This is great for agile projects. Where it falls down is if you want to use it for non-development efforts, like say a marketing project, or building a new data center. Projects where that workflow doesn't really apply. In my opinion, this is where Trello seems like it could shine. It's one tool that everyone can use to manage their work. I don't see myself leaving Pivotal Tracker any time soon, but I will definitely keep an eye on Trello.