Cloudformer is a project mainly written in ..., it's free.
An AWS CloudFormation and Fog demo tool heavily drawn from:
http://allanfeid.com/content/using-amazons-cloudformation-cloud-init-chef-and-fog-automate-infrastructure
$ fog-cloudform --name stackname --template templatename
Allan Feid wrote the original tool and James Turnbull extended it slightly to support information output from newly created AWS CloudFormation Stack.