Are there any alternatives to Microsoft Geneva Framework (preferably open source). We have planed to use it in production environment, but it looks like that Microsoft has license that doesn't allow that while the Geneva Framework is in beta.
Afraid not. It's a massively new approach, and so there's no open source, or any other alternative. Depending on what you want to do you may be able to pick and choose, but for full claims based authentication and authorization then Geneva is it right now.