Zetacoin-Qt 0.8.99.13 for Mac was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The application belongs to Business Tools. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe. The actual developer of this free software for Mac is zetacoin.
From the developer:
Zetacoin is an experimental digital currency that enables instant payments to anyone, anywhere in the world. This open source application uses peer-to-peer technology to operate with no central authority: managing transactions and issuing money are carried out collectively by the network. Zetacoin Core is a multithreaded application.
You may want to check out more software for Mac, such as Personal Finance, Putler or Investors Toolbox, which might be similar to Zetacoin-Qt.