Zindus
Zindus is an addon that synchronizes Thunderbird contacts with Google and Zimbra.
Installation for users
Download and install the addon from http://zindus.com/i/download
Installation for developers
git clone git@github.com:zindus/addon.git zindus- Register the addon in Thunderbird's Extension Manager
Voila! Edit the source under zindus/ and see the changes immediately in Thunderbird.
More Information
License
Copyright (C) 2007-2011 Toolware Pty Ltd. Mozilla Public License 1.1