Microsoft has released a plug-in for Firefox that allows Open XML documents to be viewed within the popular open source browser. The Open XML Document Viewer provides direct interoperability from Open Extensible Markup Language (XML) to HTML formats, enabling access to the information from any platform with a Web browser, including many mobile devices. The project also includes a plug-in for Firefox. Today’s customer technology preview is the first milestone following the launch of the community development effort earlier this year. As a result, users can now download a plug-in and begin viewing Open XML documents within the Firefox browser on Windows and Linux platforms without the need to install Microsoft Office or other productivity products. More information can be found here: http://www.codeplex.com/OpenXMLViewer.