The following institutions and companies are members of the g-Eclipse project:

• Forschungszentrum Karlsruhe GmbH, Karlsruhe, Germany
• Poznan Supercomputing and Networking Center, Poznan, Poland
• Johannes-Kepler University, Linz, Austria
• University of Cyprus, Nicosia, Cyprus
• Innoopract Informationssysteme GmbH, Karlsruhe, Germany
• University of Reading, Reading, United Kingdom
• IT Innovation, Southampton, United Kingdom
• NEC Laboratories Europe Ltd., IT-Division, St. Augustin, Germany

Forschungszentrum Karlsruhe defined Scientific Computing as on to the key technologies in the future. Currently the Institute for Scientific Computing (Institut für wissenschaftliches Rechnen) is and was involved in different national and international projects. FZK operates the GridKA computer center for the German high energy physics community within the LHC computing Grid. FZK is participating in the EGEE project, where it leads the German-Swiss federation. FZK is contribution to the operation, dissemination and training of EGEE. One of the generic applications of the EGEE project is lead by FZK. As a member of the CrossGrid project FZK managed the workpackage "Grid development tools" and provided and operated central services for integration team of CrossGrid. In the last year of CrossGrid FZK was driving actively the integration of all CrossGrid components and applications. In the national German Grid initiative, FZK is leading the integration project and is responsible for the whole project operation.

Within these projects, FZK gained excellence in the following fields: management and operation of large Grid clusters, deployment of middleware, validation and test of Grid middleware, Grid development tools, and Grid training courses.

PSNC is a leading HPC Center in Poland, and a Systems and Network Security Center as well as a R&D Center for New Generation Networks, Grids and Portals. PSNC is also the operator of Polish National Research and Education Network POL-34/622 and PIONIER, operator of Poznan Metropolitan Area Network POZMAN. PSNC is then Centre of Excellence of Sun Microsystems Inc. It is also the official Cisco Networking Regional Academy. PSNC employs about 130 people divided into four departments: Supercomputing, Scientific Applications, Network and Network Services. Each of PSNC’s four departments has an active computer science research group working e.g. on aspects such as: middleware, tools and methods for GRID computing, resource management for GRIDs, large scale GRID applications (Application Department), user accounting on the GRID, GRID security mechanisms and policies, GRID fabric management tools, distributed storage management, Data Center issues (Supercomputing Department). From its very beginning, the GRID concept is one of the most developing domains at PSNC. Our institution participates in numerous projects e.g.: european projects GRIDLab, CrossGRID, GRIDStart,EGEE, CoreGrid,Baltic Grid and national (founded by Polish State Committee for Scientific Research) projects PROGRESS,Vlab – Architecture of Virtual Laboratories, CLUSTERIX - National CLUSTER of LInuX System, SGIGRID - High Performance Computing and Visualisation with the SGI GRID for Virtual Laboratory Applications.
PSNC leads the researches in the area of new generation networks. We contribute in European projects: SEQUIN (IST-199920841), 6NET (IST-2001-32603) and ATRIUM (IST-1999-20675). PSNC takes an active part in many international conferences and forums, including the Global GRID Forum.
Finally, several portals and information systems are developed and managed by PSNC:
Joshua portal content management framework, dLibra digital library framework, Multimedia City Guide, Poznan Education Service, Polish Educational Portal „Interkl@sa”, WBC Regional Digital Library, EBSCO Publishing, LDAP project and Interactive TV.

JKU is the leading partner and coordinator of the Austrian Grid initiative, a nationally funded project for the establishment of a permanent Grid infrastructure in Austria, which consists of all aspects from the hardware resources, the Grid middleware, and the Grid applications in Austria and related partner countries. Besides its role as a coordinator, JKU is heavily involved in the setup of the main Grid hardware nodes, the deployment of the software at all sites, and the development of middleware extensions for specific application requirements. For the latter, JKU concentrates on user interfaces and interactive visualization on the grid, while supporting Grid applications from astrophysics, biomedicine, and numerical computing among others. In addition, JKU is also the coordinating partner of Austria in the EU EGEE Project as well as in the Central European Grid Consortium. Appointed by the Austrian federal ministry of education, science, and arts (BMBWK), JKU places one of the two national representatives in the EU e-Infrastructures Reflection Group (eIRG). The institute itself is located at the campus of the Joh. Kepler University (JKU), which is traditionally a leader of supercomputing, cluster computing and grid computing in Austria. The JKU hosts a major academic high-performance computing and networking center, as well as the leading Austrian Virtual Reality Center VRC@JKU.

The Department of Computer Science is one of the five departments of the School of Pure and Applied Sciences in the University of Cyprus. The Department has a full-time staff of 19 faculty members, 5 visiting-faculty members, 3 teaching-staff members, over 40 full-time researchers, over 200 undergraduate and 100 postgraduate students. The Department hosts a variety of central computing resources and several research laboratories. Computing resources include symmetric multiprocessor servers running AIX and Solaris, several Linux clusters, one graduate research lab with 20 AIX (IBM 43P) and 5 Sun (Sun Blade) workstations, and three undergraduate labs for programming and digital design with 20 IBM PC’s each. All resources are connected with the Cyprus Research and Educational Network (CYNET), hosted at the University of Cyprus and participating in the Geant Consortium.The High-Performance Computing Systems Laboratory (HPCL) focuses on research in Grid Computing, Web Technologies, and Telematics Applications. HPCL has participated in a number of national and European research and development projects, such as CoreGRID (IST-FP6), EGEE (I3, FP6), HealthWare (IP, FP6), ANWIRE (IST-FP5), APART (IST-FP5), DITIS (Cyprus Research Foundation), EMISPHER (Eumedis), eScienceCY (Cyprus Research Foundation), and HERMES (Cyprus Research Foundation). HPCL has developed, deployed and operates CyGrid, the Cypriot node of the European Grid Infrastructure EGEE, and the Cyprus Certification Authority (CyCA). During the last few years, HPCL has organized a number of events on Grids, such as a Grid Day (March 2003), a workshop on IT and Postoperative Intensive Care, a post-graduate school on Middleware (January 2004), the 2nd European Across Grids Conference (January 2004), the 2004 Conference on Continuity of Care in e-Heatlh (June 2004), and the European Wireless Conference (April 2005).

Innoopract is a small size enterprise started in 1992 as a specialist for innovative and object oriented software development. The strategic business segment of Innoopract is nowadays strongly correlated with the Eclipse framework. Innoopract is the provider of the Yoxos Eclipse distribution, the only specialized Eclipse distribution worldwide. Innoopract offers Eclipse solutions and services for the efficient adoption of Eclipse – the worlds leading open source development environment. As a founding member of the Eclipse Foundation and with its long history of promoting Eclipse in Europe, Innoopract is in a prime position to market open source technology based on Eclipse. With our experience in Eclipse consulting and plug-in development for Innoopract’s products and for fortune 500 companies, Innoopract can rely on a deep know how on Eclipse architecture – an essential asset to create sustainable Eclipse based products.

The Centre for Advanced Computing and Emerging Technologies (ACET) at the University of Reading has experience and expertise in collaborative, cluster and Grid computing with focus on solving large scale problems in strategic areas of science such as Computational Biology and Environmental problems. In the areas relevant to this project, Reading participates in eMinerals: Applications of Grid-enabled science to understand the environment from molecular level (UK, NERC project – 2002-2007), GT3 Testbed project, Collaborative PGRADE portal (with SZTAKI, Hungary). RUR also work closely with industry being supported by IBM research through SUR grant, SMART SMART - Stochastic Methods, AlgoRiThms and Software Environments for Simulation, Modelling and Solving Large-Scale Problems (2001-2006).
RUR works closely in the Grid area with Oak Ridge national Laboratory, USA and Barcelona Supercomputing Centre. At Reading we lead the Computational Sciences multidisciplinary team focusing on fundamental mathematical methods needed to model complex physical, chemical and biological systems, spanning different length and time scales and scalable algorithms and environments enabling scientists to efficiently implement these models on the highest performance computers.

The IT Innovation Centre is an autonomous science-park-based applied research centre. Part of the University of Southampton's School of Electronics and Computer Science, we specialise in projects to enable take-up of novel IT, particularly by industry and commerce. We research, develop, architect, engineer and integrate innovative IT systems. We provide consultancy services and deliver strategies,
road maps, proofs of- concept, demonstrators and novel operational systems. IT Innovation has participated in more than fifty ESPRIT and IST projects over the past decade, providing project management services in 15 of them. IT Innovation employs over 25 people, all experts in their fields and most qualified to Ph.D. level, with a wide range of experience in industry, commerce and academia. We deliver high quality and robust solutions and we adopt standard software engineering methodologies and quality control processes.

At the heart of many our current Grid projects is GRIA, which is Grid middleware developed by IT Innovation to enable commercial use of the Grid in a secure, interoperable and flexible manner. GRIA is free and open source, and is available from http://www.gria.org/.

IT Innovation is playing a leading role in IST NextGRID (Next Generation Grid Architecture) developing a Grid architecture that supports mainstream use by business and society. We lead the work package on “Grid Dynamics” including dynamic security and trust, and are a major contributor to the work package on "Business and Operational Issues". In the IST SIMDAT project, we are developing and deploying Data Grids in key industrial sectors to support distributed collaborative complex problem solving environments, responsible for Grid infrastructure and security, and contributing to work on VO, business processes and workflow. In the IST edutain@grid project, we lead the design of novel business models and the necessary business services and security mechanisms to support Real-time On-line Interactive Applications (ROIA) for next-generation games and elearning environments. In the IST BRIDGE project we are working to create distributed workflows between Europe and China using both European and Chinese middleware. We lead the work package on “Grid Infrastructure” where we are designing exploitable approaches to middleware interoperability. In the UK DTI Technology Programme project CRISP we are working on dynamic provision and exploitation of services (CRISP is "Commercial R3 IEC Service Provision", where R3 is "robust, reliable and resilient", and IEC is "Inter-Enterprise Computing").

NEC Research Laboratories, IT Division, NEC Europe Ltd. (NLE-IT) (former CCRLE) is a dependent branch office of NEC Europe Ltd., UK. NLE-IT is the European research lab of NEC’s corporate R&D group active in the area of Parallel and Distributed computing, which includes Distributed Service Technologies, IT Environments for Healthcare and Next Generation Applications. NLE-IT contributes to both NEC corporate research and product developments; many of its activities are embedded within collaborations with external research groups and European Commission-funded research projects. The primary focus of NLE-IT current research activities is on the development of technologies, prototypes and test-beds for next-generation Service Delivery Platforms. NLE-IT was the coordinator of the GEMSS (Grid-enabled medical simulation services) project and mainly contributed to the development of the GEMSS middleware. Currently, NLE-IT is active in the NextGRID, SIMDAT, and @neurIST Integrated Projects where it is developing new middleware solutions for security and dynamic access control, resource brokering and semantic registries.