CCAuthorize 3.4 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. CCAuthorize for Mac lies within Business Tools, more precisely Finances. We recommend checking the downloaded files with any free antivirus.
From the developer:
CCAuthorize can process credit cards and electronic payments from FileMaker Pro with CCAuthorize. CCAuthorize currently supports some 20 different Internet payment gateways, some of which include: Authorize.net Verisign Payflow Pro SurePay (LinkPoint) DataCash E-select Plus Bank of America eStores DirectOne For the complete list and more information, visit CCAuthorize @ Acme Technologies.
You may want to check out more software for Mac, such as EuroConverter, CheckTracker or MoneyLine Personal Finance Software for Mac, which might be related to CCAuthorize.