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SQuiz Matrix is an open source web content management system (CMS), intended for use by mid-sized and large organizations. It is not designed for smaller systems (less than 100 pages) rather the leaner Squiz Classic is a more suitable product for these users. Many CMSs follow a Lego style of development philosophy where you start with the core CMS then download and add (like blocks) different bits and pieces (extensions) to build a fully functional site.