AntTask-GenerateXML is an Ant task that uses XMLBeans to create example XML instances from a W3C schema. It is especially useful for looking at pieces of schema, as you can set the element you wish to use as the root one. It will use the values from enumerations as the fixed/default values for attributes and elements if they are set. It obeys the XML type system with the exception of regex/patterns.
Sustainable IDE (SIDE) is a set of graphical tools for developers who want to build sustainable software. Sustainable software is software you can extend easily, from a functional or technological point of view. On one hand, this means that when a user has a new requirement, it's easy for any developer to add it, even if the original author is not there anymore. On another hand, if you want to change the underlying technologies, you don't need to rewrite your existing application from scratch. Sustainable Software gives you the freedom to change technology, requirements, or achitecture. This can be achieved thanks to the use of models in a model driven software development (MDSD) paradigm.