twofish writes "According to the Register, Sun is set to open source a few modeling tools, including their UML modeler, XML infrastructure and visual editing tools, and BPEL tools. The software, part of the planned Java Studio Enterprise 9.0, will made available for download as part of Sun's NetBeans Enterprise Pack." From the article: "By open sourcing its UML tools Sun is continuing its push against the rival Eclipse open source tools framework. The Eclipse Foundation has pushed UML and model-driven architectures for some time via the Eclipse Tools Project. The project encompasses an open source implementation of UML, called UML2, and a modeling framework and code-generation facility to build tools and applications that use a structured data model - called the Eclipse Modeling Framework (EMF)."