Nüby-Express is an attempt to create a framework for larger, scalable event projects. Like Ruby it is based strongly on convention, with a strong pattern of pathing for its resources, and a lot of support for common repeated patterns.
Unlike Ruby it is not tied to complex activeRecords, or for that matter, any pattern of model interaction.
Some of the specific advanatages of Nüby include:
Nüby-Express uses Express at the core to manage HTTP I/O but its own unique sets of resouces and MVC based project organization.
See the Wiki for more specific details, and the test cases (via nodeunit) for many working examples.