DCP-o-matic versions 2.16.0 and higher will run on macOS version 10.8 (Mountain Lion) and higher. DCP-o-matic is split into eight separate applications, each of which can be installed by downloading the .dmg, double-clicking to open and then dragging the icon to your Applications folder.

If you don't know which parts of DCP-o-matic to install, start with the first (main) part.

If you are using macOS 10.7 (Lion) or older you will need to install the latest 2.14.x version of DCP-o-matic.