An XML-based file format developed by Microsoft and standardized by ECMA. Starting with Microsoft Office 2007, Office Open XML is the default document format for saving applications.

Microsoft announced this week that new tools have been released to help further extend the compatibility and interoperability of Office Open XML (OOXML) document formats used in Microsoft Office 2007.

Microsoft's move to make its Open XML document format an international standard could hobble the uptake of OpenDocument, the OASIS-approved document format that is supported by Sun. Earlier this ...

The company proposes to work with other industry leaders on an Ecma International open technical committee to create an open foundation for innovation with documents by standardizing Office Open XML, ...

Open XML already has been accepted by the Ecma International standards body, which today published a 2,300-page document addressing complaints and suggestions about the format from members of ...

Opinion: Congratulations, Microsoft; you've got everyone believing the big lie that Open XML is an open standard.

A US standards body has rejected Microsoft's Office Open XML document format as an international standard, which could further boost the popularity of open source standard OpenDocument (ODF) ...

Document standards like Open XML and OpenDocument, which has already earned ISO approval, are also important in the creation of digital archives.

Ecma International has stated that Office Open XML, Microsoft's next-generation Office document format, has moved closer to certification by the ISO. The five-month balloting phase has begun ...

Open XML now joins HTML, PDF and ODF as ISO- and IEC-recognized open document format standards.

Commenters focus on the inclusion of Open XML as an acceptable document format for office use.

Prominent legal counsel the Software Freedom Law Center said that the legal terms covering Microsoft's Open XML document formats pose a patent risk to free and open-source software developers.