Name: Open Directory Project (ODP)
Creator: Linking Open Data
License: Other (Open)

From about page:

The Open Directory Project is the largest, most comprehensive human-edited directory of the Web. It is constructed and maintained by a vast, global community of volunteer editors.

Openness: OPEN

Access: good. (see tags)

License: has a bespoke license which looks OKD compliant. Only issue might be the fairly arduous attribution requirement (you need to insert a particular piece of table html on every page that uses ODP material.

<p>From <a href="http://www.dmoz.org/about.html">about page</a>:</p>
<blockquote>
<p>The Open Directory Project is the largest, most comprehensive human-edited directory of the Web. It is constructed and maintained by a vast, global community of volunteer editors.</p>
</blockquote>
<h3>Openness: OPEN</h3>
<ul>
<li>Access: good. (see tags)</li>
<li>License: has a <a href="http://www.dmoz.org/license.html">bespoke license</a> which looks <a href="http://www.opendefinition.org/1.0/">OKD compliant</a>. Only issue might be the fairly arduous attribution requirement (you need to insert a particular piece of table html on every page that uses ODP material.</li>
</ul>

other-open