Development of Joose has recently focused in using it in real applications and refining the API on the go.
The most complex application to date is Blok which supports collaborative editing of user interface prototypes. Blok uses Google App Engine on the server side but almost all the code is running on the client side using Joose and jQuery (especially jQuery UI). At the core of blok lies a component system that uses roles to apply behavior to different shapes. For more information see the Joose blog..