Designed to support question and answer style interactions where the set of questions are dynamic and potentially dependent on the answers received

Initially targeted at interactive web applications, however technology independent and could be used in B2B scenarios, mobile devices, etc

An embeddable component that complements and works within existing UI frameworks such as Seam/JSF/Spring MVC

Tohu closes the development and maintenance loop for rule based web applications, by automatically generating user interfaces directly from rule sets.

via Tohu. I wonder how difficult it would be to build something like this using Ruby DSLs.