Enables translation of Microsoft Office binary documents (.DOC, .XLS, and .PPT) into the Office Open XML standard format (.DOCX, .XLSX, .PPTX).

• http://b2xtranslator.sourceforge.net/

Enables OpenXML documents to be viewed on any client system in any browser as HTML, and includes an add-ins for Internet Explorer, Firefox  and Opera (Windows/Linux)

• http://www.codeplex.com/OpenXMLViewer

Enables bi-directional interoperability between Microsoft Office (Open XML) and Open Office (ODF) file formats

• http://odf-converter.sourceforge.net/

Enables bi-directional interoperability between Office OpenXML format and Chinese Unified Office Format (UOF).

• http://uof-translator.sourceforge.net/

Demonstrates solutions for the sharing of documents across applications and platforms  using OpenXML.

• http://interopvendoralliance.org/labs/interoperability-lab-with-openxml.aspx