What to Know An XLSX file is a Microsoft Excel Open XML Format Spreadsheet file. Open one with Excel, Excel Viewer, Google Sheets, or another spreadsheet program.

Property lists are essentially XML files with a .plist extension. Here's how to edit them using the command line in the macOS Terminal app.

Is Microsoft’s Open XML document standard “so complex and so geared towards compatibility with legacy Office compatibility that it could never be implemented as a fully functional file format ...

Making good on an earlier promise, Novell has posted an Open XML translator for the OpenOffice.org productivity suite, adding Microsoft Office 2007 file format capability to the open-source ...

One roadblock to Microsoft’s end goal for Open XML is the ISO’s approval two weeks ago of a rival document file format, Open Document Format for Office Applications (ODF). Companies including ...

Burton Group, in a report that it said wasn't commissioned or funded by Microsoft, recommends that users adopt Microsoft's Open XML file format instead of the rival ODF one.