HERAFitter - an open source QCD fit framework

The parton distribution functions (PDFs) of the proton due to their non-perturbative nature are determined empirically by fitting experimental observables. The HERAFitter project aims at providing a framework for QCD analyses related to proton PDFs. The framework includes various modules and interfaces enabling a large number of theoretical and methodological options as well as study the impact of the new experimental data on the PDFs from ep, pp and pp¯ processes