You have your choice of three versions of Pinewood Master.
Intel Cocoa - Works on Sierra (and Yosemite,Mavericks,SL, L, and ML)
Intel Carbon - Works on Snow Leopard, Lion, and Mountain Lion
Power PC - Works on older G3 and G4 Macs
Use this version for Macintosh computers running Snow Leopard (OSX 10.6.x) , Lion (OSX 10.7.x), or Mountain Lion (OSX 10.8.x)
Use this version for use on older G3 and G4 Macintosh computers
Download the Demo and try it out for FREE. Then buy a license ($25) to convert the Demo into the FULL version.