DNStorm is a collaborative platform for decision-making written in Django. It uses the main concepts of brainstorming and strategy table for helping users solve complex problems collaboratively and presenting the decisions process compreensively.
A simple structured process
Tweak how you would like the decision process to be.
With your users, define the problem and the criterias.
Gather ideas in the brainstorming.
Quantify and prioritize the ideas.
Create the alternatives and compose the strategy table.
Vote for the decision and present the whole process.
Not free as in 'free beer'
DNStorm is open source and can be downloaded for free. There's instructions in the documentation about how to reproduce your own working instance. Try the demo or help by reporting bugs.