Many research topics in the fields of condensed matter and the life sciences are based
on small-angle X-ray and neutron scattering techniques. With the current rapid progress
in source brilliance and detector technology, high data fluxes of ever-increasing
quality are produced. In order to exploit such a huge quantity of data and richness
of information, wider and more sophisticated approaches to data analysis are needed.
Presented here is GENFIT, a new software tool able to fit small-angle scattering data of randomly oriented
macromolecular or nanosized systems according to a wide list of models, including
form and structure factors. Batches of curves can be analysed simultaneously in terms
of common fitting parameters or by expressing the model parameters via physical or phenomenological link functions. The models can also be combined, enabling
the user to describe complex heterogeneous systems.