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Powerful XLSX Editor can be free tried for one day without any restriction on function.

Powerful XLSX Editor is a spreadsheet program which is safety,steady and efficient.
Once you get it , you can open,view,edit,save and print many documents such as .XLSX, .XLS freely.
It is a spreadsheet program, similar to Microsoft Excel or Lotus 1-2-3. It has a number of unique features, including a system which automatically defines series of graphs, based on information available to the user.
That is very useful and interesting.

Powerful XLSX Editor can open many file formats
-Microsoft Excel 2007-2016 (.xlsx)
-Microsoft Excel 97–2003 (.xls, .xlw, .xlt)
-Microsoft Excel 4/5/95 (.xls, .xlw, .xlt)
-Microsoft Excel 2003 XML (.xml)
-Lotus 1-2-3 (WK1, WKS, 123, wk3, wk4)
-Gnumeric (GNM, GNUMERIC)
-Microsoft Pocket Excel (PXL)
-Apple Numbers (Numbers)

In addition to above of these, it can still open other file formats such as .doc, .docx, .ppt, .pptx, .pdf and so on.