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Other disciplines have started tackling this issue   (cite http://biorxiv.org/content/early/2016/03/24/045104 once doi activated),  and even in the single-molecule field a few recent publications have included or presented   open source software for analysis of surface immobilized experiments~\cite{Bronson_2009,Greenfeld_2012, K_nig_2013}. surface-immobilized experiments~\cite{McKinney_2006,Bronson_2009,Greenfeld_2012}.  For freely-diffusing smFRET experiments, although it is common to find mention of   "code available from the authors upon request" in publications, there is a dearth   of such open source code, with, to our knowledge, the notable exception of a single