DatasetAdded By Infochimps
From [about page](http://www.dmoz.org/about.html):
> 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](http://www.dmoz.org/license.html) which looks [OKD compliant](http://www.opendefinition.org/1.0/). 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.