The company is unveiling plans to open source its Sun Java System Message Queue, Sun Java System Portal Server 7 and its Java Studio Enterprise development tool, said Peder Ulander, vice president of marketing for software at Sun.

In addition, the company will release to open source the Business Process Execution Language (BPEL) engine and the Java Composite Application Platform tools it acquired from SeeBeyond.

Jonathan Schwartz, Sun's president and CEO, was to formally announce the open-source software news in his keynote address at the JavaOne conference in San Francisco. He also planned to announce an initiative to release Sun's Web Services Interoperability Technology (WSIT) components related to security, messaging and metadata support to open source, Ulander said. The WSIT is the cornerstone technology for Sun's efforts to work with Microsoft Corp. to allow Java applications to run on the .Net Web services framework.

Finally, Sun was also laying out a roadmap for releasing its Java Studio Creator -- the company's IDE for Web applications -- to the open source community.

"Everything is moving towards Web 2.0," Ulander said. "JavaOne ... is really about supporting Web-tier application developers."