OpenXmlDeveloper.org
More information on the Open XML Format Developer community is available at www.OpenXmlDeveloper.org.
"We continue to support open standards and remain deeply committed to opening up broader solution opportunities through default Open XML Formats with published reference schemas and custom-defined schema support across all programs, as well as the formation of a technical community of developers to exchange information about the Ecma Open XML Formats. We are sponsoring the creation of an Open XML Formats Developer Group, a technical community dedicated to developing solutions using the Open XML Formats that were submitted to Ecma International to manage last November. Although we believe strongly in the importance of advancing and fostering the development of industry standards, we also realize that developers need the opportunity to exchange ideas with fellow developers about the work they're doing with those standards. That is the purpose of this group. It will serve as technical resource to submit and answer questions and to share tools and ideas, and be open to anyone, free of charge, in order to enable broad participation and development of solutions using the Open XML Formats, on any platform."