Ptolemy II 7.0.1
This is not the most recent version of Ptolemy II. The most recent version can be found at



April 4, 2008 - Ptolemy II 7.0.1 is available for download

Ptolemy II 7.0.1 Common Downloads

  • Windows Installer Includes sources and JRE
  • Sources Only: Unix Line Endings - Windows Line Endings
  • Web copy, includes Applets.
  • Web Start
  • Ptolemy II 7.0.1 includes

    • Ptalon - a language for describing actors

      Primary Developers: Adam Cataldo, Elaine Cheong

    • Backtracking - rollback of a model to a previous state while executing

      Primary Developer: Thomas Feng

    • SDF Code Generator improvements

      Primary Developers: Gang Zhou, Man-kit Leung.

    • Continuous Domain - a redesign of the Continuous Time (CT) domain with rigorous semantics.

      Primary Developers: Haiyang Zheng, Edward A. Lee

    The Ptolemy II 7.0.1 Release Notes include a list of new features and actors.

    Quick Start Instructions

    Ptolemy II is available in several formats:

    You can browse Ptolemy II and run demonstration applets without downloading the distribution by accessing the web copy.
    The web copy is merely a set of web pages that were created when we untar'd the distribution on the Ptolemy web site.
    To access Ptolemy II via the applets, you can either go directly to the web copy, or go to the Ptolemy II 7.0.1 Applets page for more information.
    Web Start
    Web Start is a tool from Sun that makes installation and updates particularly simple.
    The Web Start installation works best with Windows, but has also been tried under Solaris, Linux and Mac OSX.
    The Web Start installation does not include source, but behaves almost exactly like a standalone installation: you can save models locally, and you need not be connected to the net after the initial installation.
    Note that the Applet web copy and the Web Start installations are different, the web copy is a set of web pages where some of the pages contain applets, and Web Start is a set of jar files that get downloaded to your machine so that you can run Ptolemy II at a later time, even if you are not connected to the network. For details, see the Installation Summary
    To download using Web Start, see the Ptolemy II 7.0.1 Web Start page.
    Windows Installer
    To download a Windows Installer, see the Ptolemy II 7.0.1 Windows Installer page.
    The source distribution requires either the Cygwin tools, Eclipse or some other way of running commands like make.
    After building Ptolemy II from source, start vergil from the command line and follow the tour.
    The source distribution has been compiled and run under Windows, Solaris and Linux.
    If you intend to develop your own actors in Java, then you should download the source distribution.
    To download source, see the Ptolemy II 7.0.1 Source Download page and then follow the installation instructions.


    The table below is a summary that compares and contrasts the various installers.
    Download Format Requirement Platform Size Create your own models? Require net connection at runtime? Custom Actor creation? (download includes sources) Code generator?
    Applets The applets work best with the Locally, we used Java 1.5.0_15 and Java 1.6.0_05. See also Java plugin Windows, Linux, MacOS X, Solaris Initially ~5 Mb No Yes No No
    Web Start Java Web Start Windows, Linux, MacOS X, Solaris ~57 Mb Yes Not required, but can get updates if connected No No
    Windows Installer Windows only. 1.5.0_15 Java Runtime Environment with support packages like Java 3D Windows only 135 Mb Yes No Yes No
    Source Download JDK 1.5.0 or JDK 1.6.0, Devel. tools like make Windows, Linux, MacOS X, Solaris 36.8 Mb - 44.8 Mb Yes No Yes Yes

    Places to go

  • The "Using Vergil" chapter from the Ptolemy II Design Document
  • Limitations