If you are looking to explore.
(1) http://www.convflow.com (i worked on an earlier version)
I am a big fan of idea management / collaboration softwares too. More information. Some others I recently started using are (1) http://www.thoughtback.com (useful alone) (2) https://app.thoughtplan.com (useful alone) (3) http://www.hipchat.com (prefer simpler design) or http://www.slack.com (prefer awesome design)