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The field of freely-diffusing smFRET data analysis has seen a number of significant   contributions over the years but still there is no clear consensus on a single  universal approach for data analysis.  Even if though  a wide variety of algorithms have been proposed over the years, very few of have been widely embraced by the community at large. One of the main issues   is that the analysis of smFRET data is complex and requires a significant   development effort. Currently,