MSMBuilder developers (in no particular order):

2.5
Christian Schwantes<schwancr@stanford.edu> 
Robert McGibbon    <rmcgibbo@gmail.com>
Kyle A. Beauchamp  <kyleabeauchamp@gmail.com>
Thomas J. Lane     <thomas.joseph.lane@gmail.com>
Gregory R. Bowman  <gregoryrbowman@gmail.com>

2.0
Kyle A. Beauchamp  <kyleabeauchamp@gmail.com>
Gregory R. Bowman  <gregoryrbowman@gmail.com>
Thomas J. Lane     <thomas.joseph.lane@gmail.com>
Lutz Maibaum       <lutz.maibaum@gmail.com>
Peter Kasson       <kasson@virginia.edu>
Sander Pronk       <pronk@cbr.su.se>
Trevor Gokey       <trevorgokey@gmail.com>
Imran S. Haque     <ihaque@stanford.edu>

DCD reader contributed by:
Gianni De Fabritiis
Toni Giorgino

1.0
Gregory R. Bowman  <gregoryrbowman@gmail.com>
Xuhui Huang        <xuhuihuang@gmail.com>
Sergio Bacallado   <sergiobacallado@gmail.com>
Kyle A. Beauchamp  <kyleabeauchamp@gmail.com>
John Chodera       <jchodera@gmail.com>

Additional acknowledgements:

PCCA+ code based on Matlab code from Susanna Kube.