I have been building some simple applications, as a way to learn the Google App Engine. While building them, I wound up developed a 'framework' of common supporting software, and called it 'Gawsh', which stands for 'Google App Engine Web Service Helper'. This framework takes care of a lot of the technical hassle of developing applications, in the same way that the Google App Engine takes care of most of the technical hassle of running the applications. For example, the data structures used in these applications are defined in the system, not with program code or SQL code, but in a person-readable format called YAML.