The main task of AMREJ is development, operation and management of the communication and information network for education and research. It is supported by the Federal secretariat for Development and Science, the Ministry of Science, Technologies and Development and Ministry of Education and Sport of Serbia and the Ministry of Science and Education of Montenegro. The Board of Directors managing the network consists of Directors of the University Computing Centres of all Universities in Yugoslavia. Belgrade University Computing Center is the main network operation center of the network, also coordinating the international cooperation and technical network development. The Director of Belgrade University Computing Center is representing AMREJ in international cooperation.

The Greek Research & Technology Network (GRNET S.A. www.grnet.gr) was founded in 1998 and is a state owned company under the supervision of the Hellenic Ministry of Development - General Secretariat of Research and Technology.

Profile CERN, the European Organisation for Nuclear Research, funded by 20 European nations, is constructing a new particle accelerator on the Swiss-French border on the outskirts of Geneva. When it begins operation in 2005, this machine, the Large Hadron Collider (LHC), will be the most powerful machine of its type in the world, providing research facilities for several thousand High Energy Physics (HEP) researchers from all over the world.

The Central Laboratory for Parallel Processing (CLPP) is founded in 1985. CLPP has a leading position among the scientific institutions in Bulgaria in the fields of computer science and scientific computations. It performs research, consultations, projects and high quality education. The activities of CLPP are oriented mainly to the creation and usage of advanced mathematical and computer technologies.

Representing the RoGRID Consortium as the National Grid initiative which includes also the following institutions: University "Politehnica" of Bucharest, University of Bucharest, National Institute for R&D in Physics and Nuclear Engineering Bucharest, National Institute for Aerospace Research Bucharest, Institute for Nuclear Research Pitesti, Software Company SIVECO Bucharest.

Founded in 1963, The Scientific and Technical Research Council of Turkey (TÜBİTAK) is the supreme organization put in charge of promoting, developing, organizing and coordinating research and development in the fields of exact sciences in Turkey in line with the National targets of economic development and technical progress. It functions under the fold of the Prime Ministry with adequate administrative and financial autonomy. The Council’s decision-making body is the Science Board, composed of the President and 12 members.

The Parallel and Distributed Systems Laboratory (LPDS) of MTA SZTAKI participates in several major European Grid projects (DataGrid, GridLab, APART-2) where its main task is to create a performance monitoring infrastructure for the Grid. In the Hungarian SuperGrid project LPDS adapts its P-GRADE graphical program development and execution environment developed for supercomputers and clusters towards the Grid.

Institute of Informatics and Applied Mathematics (INIMA) is founded as Center of Mathematical Calculus in 1971 and as institute in 1985. INIMA belongs to the Academy of Sciences for the development of computer science, computer networks and mathematical applications in different fields of human activity, as in economy, engineering, medicine, etc. Due to the statute of Academy of Sciences, INIMA has administrative, financial and operational autonomy.

The B&H academic and Research Network is legal body. The University of Banja Luka, the University “Džemal Bijedić” in Mostar, The University of West Mostar, the University of Sarajevo and the University of Tuzla established BIHARNET network and BIHARNET Center, which is responsible for managing of network, on February 12, 1998. As soon as new universities in Srpsko Sarajevo and Bihac have been established they become members of BIHARNET.

Macedonian Academic and Research Network was founded in 1994 by a Decision of the University Board as an organizational unit within the Ss Cyril and Methodius University and endorsed by the Ministry of Science. At the same time the Book of rules of MARNet came into force. With this document the goals, management and organizational structure as well as the financing of MARNet were stipulated.

The Institute Rudjer Boskovic is an interdisciplinary institute primarily oriented towards the field of natural sciences, founded in 1950. It consists of 12 divisions: Electronics, Computer Science, Theoretical Physics, Experimental Physics, Experimental Physics, Materials Physics, Physical Chemistry, Organic Chemistry and Biochemistry, Materials Chemistry, Molecular Genetics, Molecular Medicine, Laser and Atomic Research, Environmental and Marine Research. The involvement in Grid computing in the Institute primarily started driven by the needs of the scientists.