Open XML Converter allows you to convert Open XML files that were created in Office 2008 for Mac or Office 2007 for Windows so that you can open, edit, and save them in earlier versions of Office for Mac. Open XML Converter can convert Word documents, Excel workbooks, and PowerPoint presentations that are in the Open XML Format so that you can open and edit the files in Office 2004 for Mac and Office v. X for Mac. You can choose to convert and open one file, or convert a large number of files. This update contains several improvements to enhance stability and performance. In addition, this update includes fixes for vulnerabilities that an attacker can use to overwrite the contents of your computer’s memory with malicious code. Free for Mac OSX version 10.4.9 (Tiger) or a later version of Mac OS