Because XPSPeak 4.1 is older software, it is often hosted on university or archive sites rather than a single official commercial page.

Double-click Setup.exe to begin the installation.

While XPSPeak 4.1 is valued for its simplicity, some researchers now prefer more modern or regularly updated tools:

The software focuses on streamlining routine spectral analysis through interactive tools:

A powerful, industry-standard software. While it typically requires a license, many universities provide site-wide access.

Often used for manual deconvolution, offering a familiar interface for those already using it for graphing.

Supports common models like the Shirley background.