.XLSX File Extension
Microsoft Excel Spreadsheet
The .XLSX file extension denotes a Microsoft Excel Open XML Spreadsheet file. It is used for storing data in a
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August 10
AllFileinfo.com
The File Format Database
Search over 10,000 file extensions and software programs.
Developer: Microsoft
August 9
.3MM File Extension
3D Movie Maker Movie Project
Explore the .3MM file extension’s details, including its origin, history, structure, advantages, disadvantages, conversion methods, and how to open it.
August 8
.@@@ File Extension
MS-DOS 2.0 to 3.2x Backup Control File
Discover the .@@@ file extension: Its origin, history, structure, specifications, advantages, disadvantages, conversion methods, and how to open it on
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