Download of FullContact for Gmail 19.4.2 for Mac was available from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The actual developer of this software for Mac is FullContact Inc.
The program lies within Productivity Tools, more precisely Office Tools. 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.
From the developer:
Stay fully connected and master your contacts. FullContact lets you easily access the contact information you need to make connections on your Mac.
You may want to check out more Mac applications, such as MailTab Pro for Gmail, Fast Sync for Gmail Contacts or Gmail Dock, which might be related to FullContact for Gmail.
E-mail Tools
Cloud Services