Horos Project

Horos Project is an open-source medical image viewer that allows users to view DICOM images on Mac OS X. It is free and can be downloaded from their website 1. Horos Project has a variety of features such as 2D, 3D, and MPR viewers, as well as advanced visualization tools like PET-CT fusion 1. Horos Project also offers a plugin architecture that allows users to extend its functionality 1.