AgileZen did all this and some of their initial customers were law firms--hardly software dev only. Trello has an iOS app that is really it's biggest strength.

AgileZen did all this and some of their initial customers were law firms--hardly software dev only. Trello has an iOS app that is really it's biggest strength. I still like the full color cards for AgileZen over Trello, but they are both very similar.