XPSPEAK 4.1 is a popular freeware program used for the analysis and peak-fitting of X-ray Photoelectron Spectroscopy (XPS) data
data. Originally developed by Raymund Kwok, it is highly valued in academic and research settings for its ability to deconvolute overlapping signals and quantify chemical states. 1. Where to Download XPSPEAK xpspeak download
Did this guide help you? For advanced scripting examples and community-made voice packs, check the r/XPSpeak subreddit. Last updated: June 2026. XPSPEAK 4
Assuming you have found a clean copy, follow this guide. follow this guide.