CROSI - Capturing, Representing, and Operationalising Semantic Integration. It aims to overcome these problems by working on a systematic approach to semantic integration which will enable us to: capture and expose semantics, codify them in knowledge representation formats, and operationalise them for the benefit of integration.

OntoWeb - Ontology-based information exchange for knowledge management and electronic-commerce. The goal of the OntoWeb Network is to bring together researchers and industrials coming from various research and application areas, promoting interdisciplinary work and strengthening the European influence on Semantic Web standardisation efforts such as those based on RDF and XML.

Semanticweb.org is the Semantic Web community portal. Its objective is to collect and explain tools and techniques, which will help to create the Semantic Web, and to be a forum for people interested in the Semantic Web.

SWWS - Semantic Web Enabled Web Services main objectives are to provide a comprehensive Web Service description framework; define a Web Service discovery framework and provide a scalable Web Service mediation middleware. In order to evaluate the overall approach, SWWS will provide an integrated software environment to implement the proposed case studies.

SWSI - The Semantic Web Services Initiative is an ad hoc initiative of academic and industrial researchers, many of which are involved in DARPA and EU funded research projects. The major objective of the Semantic Web Services Initiative (SWSI) is to bring current Web technology to its full potential by combining and improving recent trends around the Web, including Semantic Web Technology, Web Service Technology and Intelligent Web Services.