Ronin

Ronin is a Model/View/Controller-based web framework featuring full type safety. Links between pages in a Ronin application are checked at compile-time, which means no broken links – by using a modern IDE like Eclipse, you can catch configuration errors and regressions right away, saving you valuable testing and debugging time. And configuring a Ronin application is done purely with Gosu code – no magic and no XML files, which makes debugging easier.

Tosa

Tosa is a zero-configuration object-relational mapping layer, allowing you to query and update SQL databases using an intuitive object-oriented model. It uses Gosu’s open type system to generate Gosu types based on your existing database schema, so there’s no configuration required – your tables and columns become Gosu objects and properties automatically.