Do you want us to add Squiz Matrix to the Bitnami library? You can vote for it on our wishlist.
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.