TurboBrainVoyager 3.2 for Mac could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. TurboBrainVoyager for Mac is included in Design & Photo Tools. The actual developer of this free Mac application is Rainer Goebel. We recommend checking the downloaded files with any free antivirus.
From the developer:
Turbo-BrainVoyager (TBV) is a highly optimized, easy-to-use software package for the real-time analysis and dynamic visualization of functional magnetic resonance imaging data sets. Turbo-BrainVoyager allows you to observe the working brain "online" by incrementally computing statistical maps as contrasts of a General Linear Model (GLM).
You may want to check out more Mac applications, such as iPodEditor, OnTheAirCGServer or Flickr Widget, which might be similar to TurboBrainVoyager.