Microsoft has opened up the Office document formats and made them available for the world to see.

The Schemas provide developers and representatives of business and government a standard way to store and exchange data stored in documents. The download contains documentation on a number of XML schemas for Microsoft® Office 2003 Editions including:

• Microsoft Office Word 2003
• Microsoft Office Excel 2003
• Microsoft Office InfoPath® 2003
• and Microsoft Office Visio® 2003

It also includes schema information for:

• Microsoft Office OneNote® 2003
• Microsoft Office Project 2003
• and Microsoft Office Research Services

Download the schemas and documentation and read the Office 2003 XML Reference Schemas Frequently Asked Questions.

News coverage from TechWorld:

"The move puts Microsoft on a better footing to compete against open-source applications and non-proprietary document formats. Governments around the world have begun to reconsider the use of proprietary formats, which usually lock them into using particular applications and may hinder archiving efforts.

"Microsoft Office formats have become a de facto standard, one of the factors making it difficult for organisations to use alternative applications."

(via Robert Scoble)