Noumenon is a content management system designed to support being extended with Sinatra applications. It's currently in an early stage of development, but right now you can create a basic static site using templates from a theme which specify the structure and presentation of your content, and YAML files which specify the actual content to place in those templates. Future development will include an end-user friendly web interface for editing and creating content, while retaining the ability for developers and designers to manage the site's presentation using the tools they're most comfortable with.