ArchiMate® is a modeling language for enterprise architecture that is supported by different tool vendors and consulting firms. ArchiMate enables enterprise architects to describe, analyze and visualize the relationships among business domains in an unambiguous way. ArchiMate offers a common language for describing the construction and operation of business processes, organizational structures, information flows, IT systems, and technical infrastructure. This insight helps stakeholders design, assess, and communicate the consequences of decisions and changes within and between these business domains.
The Open Group - formed in 1996 through the merger of X/Open and the Open Software Foundation - is an international vendor- and technology-neutral consortium upon which organizations rely to lead the development of IT standards and certifications, and to provide them with access to key industry peers, suppliers and best practices. The Open Group provides guidance and an open environment in order to ensure interoperability and vendor neutrality. The Open Group offers certifications for IT professionals.
*Sources: GuideStar, Organization Website, Wikipedia