XPSPEAK 4.1 is a widely used, free software developed by Raymund Kwok for peak fitting and analysis of X-ray Photoelectron Spectroscopy (XPS) data. Download and Installation
Because the software is no longer actively maintained by its original creator (Raymund Kwok), it is primarily hosted on academic and community repositories: xpspeak41 software download
Assuming you have a legitimate .exe or .msi file: XPSPEAK 4
To install and use XPSpeak41 software, follow these steps: MajorGeeks (legacy section) OldVersion
If the xpspeak41 software download proves impossible due to security blocks or OS incompatibility, consider these modern substitutes:
Data Format: It typically imports .dat or ASCII files. If your data doesn't load, ensure it is in simple columns and remove any text headers or extra spaces in your .txt file.