According to the information presented on the official website of the developer, you can install ODV on the following operating systems: Windows (8, 7, Vista, XP), Mac OS X, Linux, and UNIX (Solaris, Irix, AIX) systems. However, it's not mentioned what are the supported OSX versions where you can install it.
The software is not available for downloading because it requires permission first. If you have an account then simply log-in on the website and check the downloads section.
