Web Content Management History

Web Content Management Systems began to be formally developed as a commercial software product in 1995 by two startups, Sunnyvale, California-based Interwoven and its flagship TeamSite product and Austin, Texas-based Vignette's Vignette Content Management product. As the internet began to grow, likewise, the importance of Web Content Management as a part of IT infrastructure began to grow, other vendors in adjacent markets began to develop their own WCM solutions including Documentum and FileNet who had traditionally built Document Management software. Other WCM providers such as Stellent and RedDot Solutions also began to appear. By 2002, IT departments began seeking out a single vendor who could manage all of their unstructured content (documents, web pages, rich media, etc.) and WCM became a sub-set of a new, supercategory, Enterprise Content Management (ECM) which it still remains a part of today.

In the mid 2000s, the web content management market became an even more fragmented market as a plethora of new providers emerged to compliment the traditional ECM vendors. These Web Content Management systems are typically broken down into several groups: Enterprise (Vignette, Interwoven, Documentum, Oracle and others), Mid-market (Ektron, PaperThin, Ingeniux, and others), Open source (Joomla, Drupal, Alfresco and others) and SaaS (Clickability, Crownpeak, Hot Banana and others).
http://en.wikipedia.org/wiki/Web_content_management_system