ACT-R the theory is embodied in ACT-R the software. The software is available as an application or as source code.

This page holds information about the current version of the ACT-R 7 software.

Older versions of the software are still available on the old software page.


Version 7.14-<2970:2019-12-10>

Standalone Applications

Installation and running instructions can be found in the included Readme files because they differ by version.

Source Code

The source code is available here and from the subversion archive at svn:// The QuickStart.txt file has instructions on how to run ACT-R from sources.

Important Note

Version 7.14 involves a significant update to the software from version 7.5 (which is still available from the old software page). There are no changes to the ACT-R cognitive architecture, but the software changes are likely to require changes to the interface code accompanying models that were written for prior versions. The most notable such change is with the ‘device’ construct which has been completely overhauled. Here is a commented example of the changes to update the 7.5 version of the demo2 task from the tutorial.

Tutorial Units

The unit texts can be downloaded separately, but are already included in the software distributions above.

Reference Manuals

The manuals for the ACT-R software are included in the docs directory of the software distributions and also available here:

  • ACT-R remote interface documentation
  • Other Material

    The log of the commits to the ACT-R source code repository are available in a text log or an atom feed.

    Slides on updates to ACT-R 7 during the 2020 ACT-R Workshop.

    Slides on updates to ACT-R 7 during the 2019 ACT-R Workshop.

    Slides on updates to ACT-R 7 during the 2018 ACT-R Workshop.

    Slides on updates to ACT-R 7 during the 2017 ACT-R Workshop.


    If you have any problems, questions, or comments about the ACT-R software please contact Dan.