This is a demo Rails app running on Ruby 1.9.2 and Rails 3.0.5. It uses OAuth2 via OmniAuth to authorize access to a salesforce.com org (you should probably use DE org credentials). It uses the REST API to query for records, retreive records to display, create new records and update existing one. I forked Quinton Wall's omniauth-rails3-forcedotcom project to get started.

There is both a Python version and Java version of this app. Both run on Google App Engine.

To get started with the demo, the first thing you need to do is authorize access to your salesforce.com org.