This project has been worked on for many years under the generous auspices of the Philosophy Department at Carnegie Mellon University, under the direction of Clark Glymour (Philosophy, CMU), Peter Spirtes (Philosophy, CMU), and Richard Scheines (Philosophy, CMU, now Dean of the College of Humanities and Social Sciences at CMU). The lead developer has been Joseph Ramsey (Philosophy, CMU). Recent work has been done under the direction of Greg Cooper (Bioinformatics, University of Pittsburgh) in conjunction with a grant from NIH establishing the Center for Causal Discovery, with additional advice from Kun Zhang (Philosophy, CMU). The team under the NSF grant consisted of J Espino, Kevin Bui, Zhou Yuan, Kong Wongchakprasitti, and Harry Hochheiser. Additional work has been done by Bryan Andrews, Ruben Sanchez, Fattaneh Jabbari, Ricardo Silva, Dan Malinsky, Erich Kummerfeld, Lizzie Silver, Adam Brodie, Biwei Huang, Juan Miguel Ogarrio, David Danks, Kevin Kelly, Eric Strobl, Shyam Visweswaran, Shuyan Wang, Madelyn Glymour, Frank Wimberly, Matt Easterday, Tyler Gibson, Andrew Thompson, Choh-Man Teng, Michael Conrad, and Nick Nystrom. 

Joseph Ramsey, Bryan Andrews, and Kevin Bui have done recent work on the project, along with contributions from wonderful end users. Ramsey's work has partly been supported by the Department of Defense under Contract No. FA8702-15-D-0002 with Carnegie Mellon University for the operation of the Software Engineering Institute, a federally funded research and development center.