# CCK

CCK extensions help build structured content on Joomla: custom fields, filtering by them and add-ons for content construction kits such as ZOO.

The tag mixes extensions and templates. JL Content Fields Filter filters content by custom fields with AJAX, and SEO for JL Content Fields Filter sets titles and meta descriptions for the pages it generates. For ZOO there is Magic Slideshow for ZOO, an element with slideshow and carousel galleries, and the Blog Pro App for ZOO template for building a blog.