  Accurate and efficient analysis of materials properties from Nuclear Magnetic
Resonance (NMR) relaxation data requires robust and efficient inversion
procedures. Despite the great variety of applications requiring to process
two-dimensional NMR data (2DNMR), a few software tools are freely available.
The aim of this paper is to present MUPen2DTool, an open-source MATLAB based
software tool for 2DNMR data inversion. The user can choose among several types
of NMR experiments, and the software provides codes that can be used and
extended easily. Furthermore, a MATLAB interface makes it easier to include
users own data. The practical use is demonstrated in the reported examples of
both synthetic and real NMR data.
