Appenda is a work in progress, as are most open-source projects.
The goal of Appenda is to bring a J2EE / Spring Framework equivalent for the PHP environment, featuring dependency injection, inversion of control where possible, and promotion of a wide (rather than deep) class hierarchy.
Appenda will provide a number of standalone endpoints to provide service functionality, and rely on pre-defined XML + XSD schemas for intra-service communication, and ActiveMQ + Mule ESB to provide the routing and enterprise integration patterns.
And all of this using well defined, properly typed, unit tested PHP in an Eclipse + Maven development environment.
These details are provided for information only. No information here is legal advice and should not be used as such.