What is the XS5 file format?
A file with the .XS5 extension is a file known as XESS Worksheet. It belongs to the Spreadsheet Files category. This format is associated with AIS.
The reliable way to open a .XS5 file is with software that recognises this exact format, rather than guessing from the file name. If you are not sure what created a file, our file identifier can read its first bytes and name the real format, even when the file has been renamed.
We are still gathering the list of programs that open .XS5 files. A fully verified, hand-written description of this format is being prepared; until then, the details on this page are drawn directly from our database.
Format details
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