Next Step in Document Interoperability and Choice Delivered: Customers benefit from open source Open XML Translator funded by Microsoft.

Neutralizing another argument  

Developers of the open source project to produce a translator between OpenDocument format (ODF) and Open XML document formats announced the completion of the 1.0 release of the technology. The completed Open XML Translator enables conversion of documents from one format to the other and is available for anyone to download and use at no cost.

Source: Next Step in Document Interoperability and Choice Delivered: Customers benefit from open source Open XML Translator funded by Microsoft.