Websites targeting keyword nested categories

K2 is the popular, powerful and awarded content extension for Joomla! with CCK-like features developed by JoomlaWorks, makers of fine Joomla! extensions since 2006. It provides an out-of-the box integrated solution featuring rich content forms for items (think of Joomla! articles with additional fields for article images, videos, image galleries and attachments), nested-level categories, tags, comments, a system to extend the item base form with additional fields, a powerful plugin API to extend item, category and user forms, ACL, frontend editing, sub-templates and a lot more!

The HURIS Skills Directory presents 12,000 skill descriptors organized into 200 nested categories.

Import CSV to WordPress & XML to WordPress data of WooCommerce, MarketPress,Events Manager,customer Reviews,Comments,Users,Custom fields,etc,

If you used wordpress, you will notice how it lets you assign categories to your posts. These categories or Tags are hierarchical and nested. One can assign one