The deliberative software tools from What do we think? are brilliant. There are two tools to help you uncover, understand and balance sustainability priorities within your group. One tool helps you run live deliberations such as 21st Century Dialogues, and the other lets you run deliberations asynchronously via email. These tools have been painstakingly developed through years of hands-on experience working with leading deliberative experts, and are very user friendly. It's not the usual approach - give it a go! Right now they are recruiting early adopters who want to try the system.