The 1.0 version of AbSync for Mac was available to download on the developer's website when we last checked. We cannot confirm if there is a free download of this app available.
According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. This Mac app is an intellectual property of East Coast Silicon, LLC. The application is included in Productivity Tools.
From the developer:
East Coast Silicon presents a Simply Syncs stand alone module AbSync that will enable you to easily transfer data between Now Contact and Apple's Address Book. This program works fast and easy on Mac Operating System X or later and requires Apple iCal and Now Software Now Up-To-Date.
You may want to check out more software for Mac, such as Vitamin-R 1008, Java Contactor or Sync Entourage & AB Groups, which might be similar to AbSync.