Tag Meta is a native extension (component + plugin) available for Joomla that allows to efficiently manage all site's meta information. With Tag Meta, as example, it is possible to set the tag 'title' or the meta tags (e.g. from the most common 'description', 'keywords', 'author', 'robots', as well as the recently 'content rights' and 'external reference') or link 'canonical' on any page, just specifying the URL or a part of it. This provides a swiss army knife to improve site positioning in SEO optimization. But Tag Meta also supports regular expressions in the matching rules and this allows to match a group of URLs with a single rule. In this way it is possible to manage all metadata from a single control panel.
SelfGet - Tag Meta Enterprise v1.9.0 - Joomla Extension