Events June 18, 2018: Ptolemy II 11.0.1 released. October 13, 2017: Edward A. Lee Festschrift Symposium: Principles of Modeling October 16, 2015: Eleventh Biennial Ptolemy Miniconference Ptolemy in a Nutshell The Ptolemy project studies modeling, simulation, and design of concurrent, real-time, embedded systems. The focus is on assembly of concurrent components. People Downloads Publications For c