Microsoft is proffering its Open XML format for acceptance as a standard by the European Computer Manufacturers Association, though it has declined to make Open XML, the standard format for the upcoming Office 2007, compliant with ODF. Last week it said it would support the creation of a third-party plug-in to enable Microsoft Office to read and save ODF files.

Other Web-based SaaS applications that open or save files in ODF include the AjaxOffice productivity suite, the iRows.com spreadsheet and the ZohoWriter word processor.