The 4.0 version of ContactsSyncer 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. This free Mac app is an intellectual property of Maximilian Tyrtania. ContactsSyncer for Mac is included in Communication 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:
ContactsSyncer downloads your contacts from Google Contacts, Google+, XING and Twitter and imports them into your Address book, MS Outlook, MS Excel or vCard.
The free version is limited to a download of fifty (50) records. An in-app purchase will remove that restriction.
You may want to check out more Mac applications, such as ContactsSync, ContactsSyncWithGroups or Contacts Sync, which might be related to ContactsSyncer.