Enterprise content management systems
Enterprise content management: An enterprise content management system
(ECM) is content, documents, details and records related to the organizational
processes of an enterprise. The purpose and result is to manage the organization's
unstructured information content, with all its diversity of format and location. The
system manages the content related commercial organizations

Web content management systems
Web content management system: A web content management (WCM) system is a CMS designed to simplify the publication of web content to web sites and mobile devices—in particular, allowing content creators to submit content without requiring technical knowledge of HTML or the uploading of files. Several web-based content management systems exist both in the Open Source and commercial domains.

Web group content management systems
The web group content management system: (mostly known as GMS) is very similar to the WCM, with the main difference being the fulfillment of some specific requirements. These requirements aim to satisfy the needs of groups or small organizations that often have difficulty managing their online image, communicate with their members, plan events, set schedules and assign tasks to internal projects. Typically these tasks are distributed by different tools and the GMS unifies them into one.

Component content management system
Component content management system: In a component content management system, the content is stored and managed at the sub-document (or component) level for greater content reuse.