Quarkcoin-Qt unknown 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. The actual developer of this free software for Mac is Quarkcoins. The application is categorized as 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.
From the developer:
Quarkcoin-Qt is an innovative payment network and a new kind of money. The miners are what builds the infrastructure of the Quarkcoin payment & transaction system. Because miners verify transactions, their job is critical to keeping the network stable, safe, and secure. After the issuance of 247 million coins, 1 million coins will continue to be released every year through mining.
You may want to check out more software for Mac, such as iRatchet, Invoicer or Cashflow, which might be similar to Quarkcoin-Qt.