Some plugins that integrate Piwik into open source software do very little more than what our simple ZenCart plugin did. They make it possible to add Piwik's tracking code to the web platform's pages. But as Piwik's API gives you access not only to the tracking side but also to the analytics side of Piwik, a lot of plugins are written so you don't have to visit Piwik to get a breakdown of your stats. These plugins display this data for you and sometimes, in more advanced ways than you can see in Piwik itself.
A perfect example of this is the WP-Piwik Wordpress plugin . This plugin is available at http://wordpress.org/extend/plugins/wp-piwik/. Wordpress is the most popular CMS in use on the Internet. If you are familiar with Wordpress, you know how easy it is to install a plugin. You don't even have to use FTP. You can search for the plugin you need and install it in Wordpress's admin.
Well, the WP-Piwik plugin continues this ease of use by only needing the URL of your Piwik installation...