Now you can open Docx Files without Microsoft 2007 in your Firefox Browser. OpenXML viewer is Firefox Addon which helps you to open Docx file in you Firefox. OpenXML is a free and open standard from Microsoft. MS Word 2007 document files are stored using OpenXML. The OpenXML Document Viewer application was designed to be a browser plugin, that can be used on computers which dont have Microsoft Office 2007, to view the Word 2007 files using just the browser.
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The OpenXML Viewer browser plugin translates the Word 2007 file into HTML so that it can be viewed on a browser. Once the plugin is correctly installed, navigate to Tools>Options>Applications tab in Firefox.
