OGSA is expected to be implemented by multiple open-source software (OSS) projects and commercial software vendors. OSS projects such as Globus, the Business Grid Computing Project, the NextGrid Project, the NAREGI Project, University of Virginia Global Bio Grid, UK e-Science, and others will contribute.

The Globus Toolkit (Globus) is one example of a major OSS grid project. The Globus Alliance is contributing to the development of OGSA by supporting the design and implementation of open-source software that implements specifications detailed in OGSA Profiles, and the participation of the implementers of that software in relevant standards processes. With its current version, GT4, based on early implementations of WSRF and WS-Notification and including implementations of all relevant security standards, Globus provides a comprehensive software infrastructure that allows developers and users to work with OGSA concepts now. Additional standards will be incorporated into future versions of the toolkit as they evolve.

The Globus Consortium is a group of companies with a common interest in promoting the development and adoption of the Globus Toolkit for commercial use. Consortium participants also have a strong interest in standards in general, and in OGSA in particular.

The team at the University of Virginia (UVA) is committed to implementing several pieces of the OGSA Roadmap described here. Specifically, UVA will implement open versions of ByteIO, BES, RNS, and the WS-Naming specifications.

The Business Grid Computing Project (BG) is based on the OGSA Architecture specification. It is developing several services using specifications described in this Roadmap. In particular, BG will make available as open source software implementations of the Application Contents Service, JSDL, and WS-Agreement. BG intends to use the OGSA WSRF Basic Profile 1.0.

The National Research Grid Initiative (NAREGI) is a Japanese national e-science grid project aiming at developing a computational infrastructure for supporting scientific and engineering research. One of the primary goals of the NAREGI Project is to contribute to the GGF standardization activities. NAREGI has been interested in, participated in, and, where possible, given feedback to numerous GGF working groups and research groups. Amongst the various groups, NAREGI has recently placed high emphasis on the OGSA-WG activities, being the first project or group to implement the EMS architecture described in the OGSA Architecture v1.0 specification, in its alpha incarnation of the software stack that was released in 1Q 2005. Future plans will have NAREGI contribute to and provide reference implementations for Basic Execution Services (BES), Resource Selection Services (RSS), and Application Contents Service (ACS).