If you need XLSTAT for professional or academic work, there are several safe and legal ways to use it:

XLSTAT is a popular statistical software suite that functions as an add-on for Microsoft Excel, allowing users to perform complex data analysis within a familiar spreadsheet environment.

After a trial expires, the software often reverts to a "Free" version. While limited, it still includes essential data tools like descriptive statistics and basic charts.

User-friendly, "point-and-click" software built on R that feels similar to a dedicated spreadsheet tool (Free).

Excellent for data science and large-scale analysis (Free).