The official documentation is at: http://docs.alfresco.com
Competitive CMS Products
Interwoven (merged with iManage in 2003) offers two document management platforms, and two primary content management platforms.
WorkSite NT - WorkSite NT is a collaborative document management product based on Microsoft Windows technologies.
WorkSite MP - WorkSite MP is Interwoven's service-oriented-architecture document management offering. It runs on a J2EE compliant infrastructure.
LiveSite - LiveSite is used to manage dynamic, outward-facing websites.
TeamSite - TeamSite is used to manage web-centered content across the enterprise.