K2 is a content construction component (similar to CCK for those acquainted with Drupal), which lets you easily create any content type for your Joomla! website. Using K2, you can transform your Joomla! website to a news/magazine site with author blogs, product catalogs, work portfolio, knowledge base, download/document manager, directory listing, event listing and more, all this bundled under one component, accompanied by a super module!