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Open data is the idea that certain data should be freely available to everyone to use and republish as they wish, without restrictions from copyright, patents or other mechanisms of control. The goals of the open data movement are similar to those of other "Open" movements such as open source, open hardware, open content, and open access. The ph

DiscOU is a resources discovery engine relying on a semantic index of Open University Open Content. It semantically analyses the content of an online resource, and matches it by similarity to other existing Open University content to retrieve the most relevant pieces. It currently works with BBC programme pages, as demonstrated in the video below, as well as from text entered/pasted in the DiscOU alfa interface.

OpenStructs is an education and distribution site dedicated to open source software for converting, managing, viewing and manipulating structured data. Structured data can represent any existing data struct from the simplest attribute-value pair formats to fully specified relational database schema. Material on this OpenStructs site ranges from individual tools to complete open semantic frameworks (OSF) with which to builld comprehensive semantic instances. All OpenStructs tools are premised on the canonical RDF (Resource Description Framework) data model. Thus, OpenStructs tools either convert existing data structures to RDF, extract structure from content as RDF, or manage and manipulate RDF. All OpenStructs tools and approaches are as compliant as possible with existing open standards from the W3C. The intent is to achieve maximum data and software interoperabililty.

Apache Stanbol (currently in incubation ) is an open source modular software stack and reusable set of components for semantic content management. Apache Stanbol components are meant to be accessed over RESTful interfaces to provide semantic services for content management. The current code is written in Java and based on the OSGi modularization framework. Applications include extending existing content management systems with (internal or external) semantic services, and creating new types of content management systems with semantics at their core.

The lod.euscreen.eu/resource/ pilot is an initial attemp of making the EUscreen content availiable as Linked Open Data on the web. It allows users not only to access and retrieve metadata from the EUScreen content,via standard Web technologies, but also to discover relevant data within the multitude of the available content and even to implement applications that integrate data from EUScreen collection.

The AIFB Web Portal is the public web site of the Institute of Applied Informatics and Formal Description Methods (AIFB) at Karlsruhe Institute of Technology. It uses Semantic MediaWiki to provide a highly customised Content Management System. The site provides content in two languages (German and English), and it offers rich views for browsing different kinds of data. The content of the AIFB Web Portal is regularly edited by most members of the institute, from secretary to professor, but it is not open for public editing.

CKAN is an open registry of data and content packages. Harnessing the CKAN software, this site makes it easy to find, share and reuse content and data, especially in ways that are machine automatable.

Cross-Origin Resource Sharing (CORS) is a specification that enables a true open access across domain-boundaries. With this site we want to support the adoption of CORS. [more...] If you have public content that doesn't use require cookie or session based authentication to see, then please consider opening it up for universal JavaScript/browser access. [more...]

The Virtuoso SPARQL query service implements the SPARQL Protocol for RDF (W3C Working Draft 25 January 2006) providing SPARQL query-processing for RDF data available on the open internet. The query service implementation extends the standard protocol by providing multiple output-formats alongside the standard XML results serialization. At present this uses additional query parameters, although content-negotiation will be supported soon.

The Open Data Protocol (OData) is a Web protocol for querying and updating data that provides a way to unlock your data and free it from silos that exist in applications today. OData does this by applying and building upon Web technologies such as HTTP, Atom Publishing Protocol (AtomPub) and JSON to provide access to information from a variety of applications, services, and stores. The protocol emerged from experiences implementing AtomPub clients and servers in a variety of products over the past several years. OData is being used to expose and access information from a variety of sources including, but not limited to, relational databases, file systems, content management systems and traditional Web sites.

the team of developers will transition the semantic platform (DataStaR) developed at Cornell University from a single library software prototype to a well-documented, open-source platform ready for adoption and extension at other institutions wishing to provide research data sharing and discovery services.

Hello Janos, Thanks for sending me information and content about Web 3.0. It's interesting topic and I am looking into it.

conStruct SCS is a distro of the Drupal framework that aims to set a new standard in data integration and as a structured content system (SCS). With conStruct, you can let your data and its structure drive your applications. You can easily interoperate your diverse internal information with public content on the Web. And you can leverage a platform designed from the ground up for knowledge management and collaboration. We invite you to learn more and take some test drives. And, like Drupal, conStruct is of course free and open source.

Common Tag is an open tagging format developed to make content more connected, discoverable and engaging. Unlike free-text tags, Common Tags are references to unique, well-defined concepts, complete with metadata and their own URLs. With Common Tag, site owners can more easily create topic hubs, cross-promote their content, and enrich their pages with free data, images and widgets.

LOV, your entry point to the growing ecosystem of linked open vocabularies (RDFS or OWL ontologies) used in the Linked Data Cloud. Here you will find vocabularies listed and individually described by metadata, classified by vocabulary spaces, interlinked using the dedicated vocabulary VOAF. You will enjoy querying the LOV dataset either at vocabulary level or at element level, exploring the vocabulary content using full-text faceted search, and finding metrics about the use of vocabularies in the Semantic Web.

LOV, your entry point to the growing ecosystem of linked open vocabularies (RDFS or OWL ontologies) used in the Linked Data Cloud. Here you will find vocabularies listed and individually described by metadata, classified by vocabulary spaces, interlinked using the dedicated vocabulary VOAF. You will enjoy querying the LOV dataset either at vocabulary level or at element level, exploring the vocabulary content using full-text faceted search, and finding metrics about the use of vocabularies in the Semantic Web.

Callimachus (kəlĭm'əkəs) is a framework for data-driven applications based on Linked Data principles. Callimachus allows Web authors to quickly and easily create semantically-enabled Web applications.

IKS - Interactive Knowledge Stack is an Integrating Project part-funded by the European Commission. It started in January 2009 and will provide an open source technology platform for semantically enhanced content management systems.

The overarching goals of the Open Annotation Collaboration (OAC) are to facilitate to emergence of a Web and resource-centric interoperable annotation environment that allows leveraging annotations across the boundaries of annotation clients, annotation servers, and content collections, to demonstrate the utility of this environment, and to see widespread adoption of this environment.

Thinkbase - a "Visual Wiki" - is based on Freebase, an open, shared database of the world's knowledge. It displays the Freebase contents in an interactive graph which allows the user to visually explore more than 12 million inter-connected topics.