The 2.72.1 version of ARToolKit for Mac was available to download on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. We recommend checking the downloaded files with any free antivirus. This free Mac app is an intellectual property of Philip Lamb. ARToolKit for Mac belongs to Developer Tools.
From the developer:
ARToolKit is an optical marker tracking and overlay for augmented reality. The Augmented Reality Tool Kit (ARToolKit) captures images from video sources, optically tracks markers in the images, and composites them with computer-generated content using OpenGL.
You may want to check out more Mac applications, such as AcidSearch Installer, solr or joomla-, which might be related to ARToolKit.