Dave Ligthart

Import users from vcard as subscribers. 
Works with populair websites such as linkedin and gmail.
Notable features:
<ol>
<li>Import users from vcards as subscribers to your website.</li>
<li>Import user contact data from populair websites such as linkedin and gmail.</li>
</ol>

WP-vCard

Import users from vcard file format. Works with populair websites such as linkedin and gmail.

Paolo

This plugin is no longer needed. GeoDirectory is now compatible with X out of the box
With <a href="https://wordpress.org/plugins/geodirectory" rel="ugc">GeoDirectory plugin</a> and the compatibility pack you can Turn your X Theme powered website into an interactive Business Directory!
Given the high number of requests for 100% compatibility with this theme layout, we decided to pack the necessary functions and css hacks in a simple plugin.
The plugin does a very simple thing. Through action hooks and filters, it removes the default html wrappers from GeoDirectory templates and adds X html wrappers.
This make GeoDirectory pages display gracefully when used with X.
<h4>Requires GeoDirectory and X theme from theme.co</h4>
<ul>
<li><a href="https://wordpress.org/plugins/geodirectory/" rel="ugc">Get GeoDirectory</a>.</li>
<li><a href="http://wpgeodirectory.com/" rel="nofollow ugc">Get GeoDirectory Addons</a>.</li>
<li><a href="http://theme.co/x/" rel="nofollow ugc">Get X</a>.</li>
</ul>

GeoDirectory – X Theme Compatibility Pack

This plugin is no longer needed. GeoDirectory is now compatible with X out of the box

WP-vCard vs GeoDirectory – X Theme Compatibility Pack