- This plugin was based on LBB, “Little Black Book”; which was based on Addressbook, both of which can be found in the Plugin Directory.
- vCard class is a modified version by Troy Wolf
- Update Notice in plugin admin inspired by Changelogger 1.2.8 by Oliver Schlöbe.
- Screen Options class by Janis Elsts.
- vCard icon by Oliver Twardowski; license free for commercial use