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Currently, in fact,  each research group have reimplemented its own unpublished or closed-source versions  of the analysis software, with very little collaboration or code sharing. sharing, except for a  recent laudable example~\cite{Murphy2014}.  Even within our group, smFRET papers from the past  merely mention that custom-made software has been used with very little additional details (\cite{Lee_2005}\cite{Nir_2006}).  The fact that setups for freely-diffusing smFRET can significantly   vary (in number of polarization or spectral channels for example),