This firefox add-on lets you visualize all the RDFa data included in a web page, shows a list with errors and warnings found while parsing the document, and allows to execute SPARQL queries on the RDFa content.

Uberblic.org is an integration service for data on the web. It acts as a layer between data publishers and data consumers. It consolidates and reconciles information in real time into a central data repository, and provides developer APIs on top. We make this consolidated data repository available to everyone who needs access to integrated web data, ranging from web developers to large enterprises. The consolidation platform imports information from open data sources like Wikipedia, Geonames, Musicbrainz, TheMovieDB, and others, can mirror changes from these original data sources in real time, and can integrate enterprise data sources into private consolidated views.

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.

"The Open Graph protocol enables any web page to become a rich object in a social graph. For instance, this is used on Facebook to enable any web page to have the same functionality as a Facebook Page. While many different technologies and schemas exist and could be combined together, there isn't a single technology which provides enough information to richly represent any web page within the social graph. The Open Graph protocol builds on these existing technologies and gives developers one thing to implement. Developer simplicity is a key goal of the Open Graph protocol which has informed many of the technical design decisions."

"A new project to help local government open up their election results "

"Omniscious is a planned Web 3.0 free open online research platform for non-researchers. The system is intended for anyone curious and interested in investigating complex problems or solving unanswered mysteries. The aim of the project is to develop an Information infrastructure to enable citizens of the world to conduct bottom up distributed research on a mass scale. Read the project description document (PDF) for more information. "

"SchemaWeb is a directory of RDF schemas expressed in the RDFS, OWL and DAML+OIL schema languages. SchemaWeb is a place for developers and designers working with RDF. It provides a comprehensive directory of RDF schemas to be browsed and searched by human agents and also an extensive set of web services to be used by software agents that wish to obtain real-time schema information whilst processing RDF data. RDF Schemas are the critical layer of the Semantic Web. They provide the semantic linkage that 'intelligent' software needs to extract value giving information from the raw data defined by RDF triples. "

"machine learning and natural language processing, especially for large data sets by Joseph Turian and colleagues"

The Calais web service automatically attaches rich semantic metadata to the content you submit. Using natural language processing, machine learning and other methods, Calais categorizes and links your document with entities (people, places, organizations, etc.), facts (person "x" works for company "y"), and events (person "z" was appointed chairman of company "y" on date "x"

Semantic Web Activity Statement The goal of the Semantic Web initiative is as broad as that of the Web: to create a universal medium for the exchange of data. It is envisaged to smoothly interconnect personal information management, enterprise application integration, and the global sharing of commercial, scientific and cultural data. Facilities to put machine-understandable data on the Web are quickly becoming a high priority for many organizations, individuals and communities.

"Jena is a Java framework for building Semantic Web applications. It provides a programmatic environment for RDF, RDFS and OWL, SPARQL and includes a rule-based inference engine. Jena is open source and grown out of work with the HP Labs Semantic Web Programme. "

"The mission of the RDFa Working Group, part of the Semantic Web Activity is to support the developing use of RDFa for embedding structured data in Web documents in general. The Working Group will publish W3C Recommendations to extend and enhance the currently published RDFa 1.0 documents, including an API. The Working Group will also support the HTML Working Group in its work on incorporating RDFa in HTML5 and XHTML5. "

RPI's Tetherless World Constellation will address this emerging area of "Web Science," focusing on the World Wide Web and it's future use. Faculty in the constellation will explore the research and engineering principles that underlie the Web, will enhance the Web's reach beyond the desktop and laptop computer, and will develop new technologies and languages that expand the capabilities of the Web. We will use powerful scientific and mathematical techniques from many disciplines to explore the modeling of the Web from network- and information- centric views.