CasaXPS Resource Centre
CasaXPS is possibly the most widely used software for fitting XPS data, developed by Neal Fairley. You can find bountiful resources for CasaXPS processing on the CasaXPS YouTube channel.
You can find CasaXPS here.

CasaXPS is possibly the most widely used software for fitting XPS data, developed by Neal Fairley. You can find bountiful resources for CasaXPS processing on the CasaXPS YouTube channel.
You can find CasaXPS here.