This distribution provides WSGI middleware for "RESTful" mapping of URL paths to WSGI applications. Selector now also comes with components for environ based dispatch and on-the-fly middleware composition. There is a very simple optional mini-language for path expressions. Alternately we can easily use regular expressions directly or even create our own mini-language. There is a simple "mapping file" format that can be used. There are no architecture specific features (to MVC or whatever). Neither are there any framework specific features.