Matomo is an open source web analytics system that runs on a PHP/MySQL webserver.

Matomo (formerly named Piwik) is web analytics software that runs as a web application.

It works similarly to popular analytics software such as Google Analytics; an important difference is that Matomo users typically install and manage their own Matomo installations, rather than using externally hosted ones; hence, considerations w.r.t. maintenance and privacy protection are markedly different.

Matomo is open source (GPL) and actively developed by an international team of developers. Written in PHP, using MySQL as its database backend, it will run on most webservers. Optional functionality is available in the form of plugins; developers can write their own plugins.

To be tracked by Matomo, a website must insert tracking code into its pages; if the website runs on a popular CMS it may well have a plugins to enable this. Matomo can use JavaScript, cookies, and/or images to perform its tracking.

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