.xlsx File Extension

XLSX files are created using the Open XML standard, which was introduced in Microsoft Office 2007. They are stored as a compressed Zip archive, which contains a collection of individual files. The archive includes the file [Content_Types].xml, which describes the spreadsheet, and an XML file for each worksheet within the spreadsheet.

Each cell in an XLSX spreadsheet may be formatted individually. For example, cells may have a number, text, currency, or other format as well as color, border style, custom font, and size. Cells may reference other cells to compute a resulting value.

NOTE: XLSX files can be opened in Excel 2007 or later. They are also backwards compatible with earlier versions of Excel via Open XML component support.

Workbook1.xlsx - The default filename Microsoft Excel gives to new workbooks beginning with Excel 2007.

Windows

ACD Systems Canvas Nuance OmniPage Google Drive Microsoft Office LibreOffice IMSI TurboPDF Nuance PDF Converter Professional FileMaker Pro Microsoft Works Microsoft Access Golden Software Voxler Microsoft Excel Corel Quattro Pro Gnumeric Adobe InDesign

Linux

Google Drive LibreOffice Gnumeric Wolfram Research Mathematica Calligra Suite OxygenOffice Professional

Android

Google Drive for Android MobiSystems OfficeSuite Pro Kingsoft WPS Office for Android Infraware Polaris Office for Android Apowersoft Phone Manager SoftMaker Office PlanMaker Mobile Microsoft Excel for Android

Macintosh

Google Drive Microsoft Office LibreOffice Planamesa NeoOffice FileMaker Pro Adobe InDesign Microsoft Excel for Mac CS Odessa ConceptDraw MINDMAP Apple Numbers Wolfram Research Mathematica Nuance OmniPage Pro X Calligra Suite

iOS	Google Drive for iOS MobiSystems OfficeSuite Pro Infraware Polaris Office for iOS Good.iWare GoodReader for iOS Microsoft Excel for iOS

WEB	Intuit QuickBooks Canada