Web Services Directory

In accord with Tim Berners-Lee's vision of a Semantic Web as "an extension of the current one, in which information is given well-defined meaning, better enabling computers and people to work in cooperation", the OntoWeb Network has been set up to provide support for, disseminate information on, and encourage development of, ontologies as the essential technology for the Semantic Web.

iMorph is a technology provider specializing in the transformation of information for dynamic web implementation.

A semantic search engine that indexes pages marked up with SHOE, an ontology-based, XML-compatible, knowledge representation language for the Web.

Platypus Wiki is an enhanced Wiki Wiki Web with ideas taken from Semantic Web. We call it a Semantic Wiki Wiki Web. It offers a simple user interface to create a Wiki Page plus metadata according with W3C standards. It uses RDF (Resource Description Framework), RDF Schema, and OWL (Web Ontology Language) to create ontologies and manage metadata.

OilEd is a simple ontology editor which allows the user to build ontologies using OIL. The intention behind OilEd is to provide a simple, freeware editor that demonstrates the use of, and stimulates interest in, OIL. OilEd is not intended as a full ontology development environment. The OilEd executable is available as freeware.

The goal of the Rule Markup Initiative is to develop RuleML as the canonical Web language for rules using XML markup, formal semantics, and efficient implementations. RuleML can thus specify queries and inferences in Web ontologies, mappings between Web ontologies, and dynamic Web behaviors of workflows, services, and agents.

The objective of Esperonto is to form a bridge between the actual Web and the Semantic Web by providing a service to "upgrade" existing content to semantic Web content. Ontologies play a key role in this effort, aiming at unifying, bridging and integrating multiple heterogeneous, international and multilingual digital content.

ILRT's Semantic Web Research Group works in the area of making the information on the web more usable for machines, especially using technologies such as RDF. A useful summary of research projects, standards works and demonstrations in the area of Semantic Web

OWL is a semantic markup language for publishing and sharing ontologies on the World Wide Web. OWL is derived from the DAML+OIL Web Ontology Language [DAML+OIL] and builds upon the Resource Description Framework

OpenCyc is the open source version of the Cyc technology, the worlds largest and most complete general knowledge base and commonsense reasonging engine. Cycorp, the builders of Cyc, have set up an independent organization, OpenCyc.org, to disseminate and administer OpenCyc, and have committed to a pipeline through which all current and future Cyc technology will flow into ResearchCyc (available for R&D in academia and industry) and then OpenCyc.

The objectives are to develop a roadmap for cutting edge research and commercial application of new web technology, specifically to position RTD projects in Framework VI. Semantic Web, Web Services, and their combination may promise a large stream of successful IST projects helping key action III to strengthen its profile of hosting leading research projects with world wide visibility and impact.

This is the community site for Ontoweb, a European Union founded project about Ontology-based information exchange for knowledge management and electronic commerce.

This site is the home page of Ontology.Org, the consortium of organisations and individuals developing knowledge level models and representations of electronic marketplaces.

RDFWeb is an experimental linked information system, where the linked items are machine-understandable documents in the World Wide Web. These documents, written in the XML, RDF and XHTML languages, are harvested by our Web indexing programs, which then merge the resulting information to form one big database. By exploiting various features of the RDF technology alongside related tools such as digital signature, we can use the Web to retrieve structured information that machines can process and act upon. RDFWeb is best understood as an exploration of the question: what would it be like if machines could read what we say in our Web homepages?

Web-IQ.com is a software research and development company specializing in Semantic Web Services.

KTweb brings together the European projects and people working in information access and knowledge technologies - in research, academia and business - and offers information and resources in these domains at a global level. An good starting point for knowledge technologies information.

Protégé-2000 is an integrated ontology and knowledge-base editing environment. It provides an open-source, extensible architecture for the creation of customized knowledge-based tools in Java. Protégé-2000 is available as free software under the open-source Mozilla Public License.

Summary of existing resources, articles and references on the OWL Web Ontology Language

The Darwin Information Typing Architecture (DITA) is an XML-based, end-to-end architecture for authoring, producing, and delivering technical information. This architecture consists of a set of design principles for creating "information-typed" modules at a topic level and for using that content in delivery modes such as online help and product support portals on the Web.

Round up of current Semantic Web standards and development activity authored by Tim Berners-Lee and Eric Miller. Good introduction to the rapidly evolving standards.

The Corese platform implements an RDF/RDFS processor based on Conceptual Graphs (CG). It enables the processing of RDF Schemas and RDF statements within the CG formalism (see a note from T. Berners-Lee on the subject). The graph matching algorithm, called projection, enables to retrieve RDF statements according to a query and hence implements a search engine. The projection operation takes advantage of the class and property type hierarchies. When querying on a given resource type, the projection find instances of the given type as well as instances of the specializations of that type. This is also true with property types.

Semantic World is a web community dedicated to the use of semantic information management methods in industry. Semantic World contains relevant news and analysis, a comprehensive resource center, and interactive forums for practitioners of semantic methodologies to share experiences, problems, and initiatives. Semantic World aims to support and influence developing standards for ontology modeling, semantic mapping, and the use of semantic information management methods in IT.

TRIPLE is an RDF query, inference, and transformation language for the Semantic Web. Instead of having a built-in semantics for RDF Schema (as many other RDF query languages have), TRIPLE allows the semantics of languages on top of RDF (like RDF Schema, Topic Maps, UML, etc.) to be defined with rules. For languages where this is not easily possible (e.g., DAML+OIL), access to external programs (like description logics classifiers) is provided. As a result, TRIPLE allows RDF reasoning and transformation under several different semantics, which is necessary if you need to access multiple data source in one application (e.g., for data integration).

The Web Ontology Working Group is chartered to build upon the RDF Core work a language for defining structured web based ontologies which will provide richer integration and interoperability of data among descriptive communities.

Through our website, whitepapers, and consulting services, Semaview aims to be the world leader of semantic technologies.