HERAFitter - an open source QCD fit framework

The patron distribution functions (PDFs) of the proton due to their non-perturbative nature aredetermined empirically by fitting experimental observables. The HERAFitter project aims atproviding a framework for QCD analyses related to proton PDFs. The framework includes variousmodules and interfaces enabling a large number of theoretical and methodological options. Italso alows to study the impact of the new experimental data on the PDFs from ep, pp and p ¯ pprocesses. The fast development of the project involves active communication with theoristsand close collaboration with the main PDF fitting groups. Full information about the project,downloads and documentation can be found in http://herafitter.org.XXI International Workshop on Deep-Inelastic Scattering and Related Subjects22-26 April, 2013, Marseilles, France, Speaker