Blogspot (Blogger), founded by Pyra Labs in 1999 and acquired by Google in 2003, is one of the earliest and most influential free blog hosting platforms.
MODX is an open-source PHP content management system initiated in 2004 and released under GPLv2, known for content-presentation separation, Template Variables (TVs) and fine-grained permissions. Free and open source, it suits developer-led, high-performance and highly customizable website projects.
CMS Made Simple is an open-source PHP content management system created in Canada in 2004 under the GPL license, known for its lightweight template and module system. It suits individuals and small businesses building content sites at no license cost.
Joomla is an open-source content management system released in 2005 that powers about 1.9% of websites worldwide. Native multilingual support and a strong user permission system, combined with 6000+ extensions, suit membership sites, social platforms and organizational portals.