Plato is available in two versions:

Government Use Notice (GUN)

The government license version comes with a user-friendly environment for problem setup, job submission, progress monitoring, and post processing. Available to U.S. Government agencies and contractors working under contract to the U.S. Government or one of its agencies. Additional information on obtaining a no-fee site license is detailed below.

Open Source

The open source version does not include the user-friendly environment.  For access to the open source version of Plato visit

Obtaining a Plato License 

U.S. Government Agencies

Plato is available to U.S. Government Agencies (i.e. military, government labs).

U.S. Government Contractors

Plato is also available to companies performing work under contract when issued directly by a U.S. Government entity. The GUN for U.S. Government contractors is limited to the term of the contract requiring the use of Plato.

Additionally, Plato licenses are available to commercial entities through Cooperative Research and Development Agreements (CRADAs). These licenses are negotiated on a case by case basis.

Request a License

To start the GUN process Government requestors, identified in the categories listed above, must submit a completed Participant Data Sheet available at Participant Data Sheet.

Important Items
  • When issued under a GUN, Plato is export controlled as defined by U.S. Department of Commerce and U.S. State Department regulations.
  • Once the completed Participant Data Sheet has been submitted and received the Plato licensing liaison will initiate the approval process. Assuming there are no problems with the request, a password will be issued with download and installation instructions.
  • An original of the signed license agreement is due to Sandia within 30 days of receipt of password. Failing to send a hardcopy will result in cancellation of the license agreement and download privileges revoked.
  • Sandia National Laboratory Employees: If you are a Sandian and wish to use Plato, please submit a request for a license (and/or distribution) by sending an e-mail to

There is currently no charge for GUN for Plato. Note that recent policy changes (Nov. 2011) now permit us to provide GUNs free of charge.

System Requirements
The Plato graphical user interface (GUI) can be installed on Windows, Linux, or Mac but the physics and optimization piece is only currently supported on Linux-based operating systems (Linux and Mac).  The preferred setup is one where the physics/optimization piece is installed on a Linux cluster and the GUI is installed on any machine that can submit jobs to that cluster.  However, if a cluster is not available a totally local installation (both GUI and physics) can be done on a Linux or Mac machine.  For a local installation please follow these installation instructions.  For a cluster installation please contact for assistance.

For more information about licensing Plato, please contact