Downloading BusyContacts 2023.2.1 for Mac from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this app available. We recommend checking the downloaded files with any free antivirus. The program is included in Security Tools. This Mac app was originally created by BusyCal LLC.
From the developer:
BusyContacts makes managing contacts faster and more efficient. Offering the same power and flexibility that BusyCal users enjoy with their calendars, this app integrates seamlessly with BusyCal to form a flexible, easy to use CRM solution for managing calendars and contacts.
You may want to check out more software for Mac, such as MEO, Knox or Pastor, which might be related to BusyContacts.