You could have downloaded ContaxCRM 3.9.92 for Mac from our application library for free. The actual developer of this software for Mac is ARTEN SCIENCE LIMITED. The application is categorized as Business Tools.
From the developer:
ContaxCRM lets you capture, store, view, interact, communicate with, and manage all of your contacts whether they be customers, prospects, suppliers, members, personal, network or even competitors. Build relationships and reap the rewards. It has never been easier. No monthly payments.
You may want to check out more software for Mac, such as Onepoint Project, Open ERP or Teamwork, which might be related to ContaxCRM.