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OBO-Edit is optimized for the OBO biological ontology file format. It features an easy to use editing interface, a simple but fast reasoner, and powerful search capabilities. OBO-Edit is developed by the Berkeley Bioinformatics and Ontologies Project, and is funded by the Gene Ontology Consortium. Contributions to the OBO-Edit codebase are always welcome.

This Java Library provides a simple interface for querying the Semantic Web Index Sindice.com. It supports both term queries and advanced queries with the possibility to set different query parameters like : page number, sorting of results by date.

This section of the OpenStructs Web site provides rather complete documentation for the Semantic Components, our ontological driven user interface framework. A semantic component is a Flex component that takes record(s) description(s) and irXML schema(s) as input, and that output some (possibly interactive) visualization(s) of that record. Depending on the logic described in the input schema(s) and the input record(s) description(s), the semantic component will behave differently to optimize its presentation to the users.

This query page is designed to help you test OpenLink Virtuoso SPARQL protocol endpoint. Consult the Virtuoso Wiki page describing the service or the Online Virtuoso Documentation section RDF Database and SPARQL. There is also a rich Web based user interface with sample queries. You can access it at: /isparql.

YAGO (Yet Another Great Ontology) is a huge semantic knowledge base. Currently, YAGO knows over two million entities such as persons, organizations and cities and about twenty million facts about these entities. A web interface allows users to pose questions to YAGO in the form of queries on the YAGO homepage. YAGO is being developed at the Max Planck Institute for Computer Science ...

ConceptBase.cc is a multi-user deductive database system with an object-centered data model. Its ability to represent information at any abstraction level (data, class, metaclass, meta-metaclass, etc.) makes it a powerful tool for metamodeling and engineering of customized modeling languages. The system is accompanied by a highly configurable graphical user interface that builds upon the logic-based features of the ConceptBase.cc server.

RDFLib is a Python library for working with RDF, a simple yet powerful language for representing information. The library contains parsers and serializers for RDF/XML, N3, NTriples, Turtle, TriX and RDFa. The library presents a Graph interface which can be backed by any one of a number of store implementations, including, memory, MySQL, Redland, SQLite, Sleepycat, ZODB and SQLObject.

The ConceptWiki is a universal open access repository of editable concepts. ConceptWiki will evolve from the wiki that is found here now. There will be some rearrangement of the interface and when complete, the ConceptWiki will feature, for each specific concept, a Also Known As table containing identifiers (from various databases) and the associated terminological information.

Paul Miller works at the interface between the worlds of Cloud Computing and the Semantic Web, providing the insights that enable you to exploit the next wave as we approach the World Wide Database.

Wandora is a general purpose information extraction, management, and publishing application based on Topic Maps and Java Swing. Wandora has graphical user interface, layered presentation of knowledge, several data storage options, huge collection of data extraction, import and export options, embedded server, and open plug-in architecture. Wandora is a FOSS application with GNU GPL license.

the wiki for the community of users, administrators and developers of the Semantic MediaWiki extension to the MediaWiki application, and all its spinoff extensions, including Semantic Forms, Semantic Drilldown, Semantic Result Formats, Halo, Semantic Maps and others. The wiki itself uses many of these extensions, in order to provide a flexible yet structured interface to the data. Here you will find information on people and organizations in the Semantic MediaWiki community, a listing of SMW-based sites, a list of extensions themselves, a list of SMW-related events, a list of requested features for the extensions, and a list of "packages", which are collections of wiki pages defining properties, templates, forms etc. that can be imported into one's wiki to create an instant data structure.

Freebase Parallax: A new way to browse and explore data - a novel browsing interface designed for freebase.com

A semantic web experiment with a focus on Ontology Visualisation and Querying. For an idea of what we are about: Check out jOWL, a javascript library for traversing OWL-RDFS documents (under development). Dig through the available Ontologies with the ontology Interface, find what you are looking for amidst the more than 70.000 information pages:

LIMES is a link discovery framework for the Web of Data. It implements time-efficient approaches for large-scale link discovery based on the characteristics of metric spaces. It is easily configurable via a web interface. It can also be downloaded as standalone tool for carrying out link discovery locally.

The Thesaurus Project of the Geological Survey of Austria attempts the task of the construction of a controlled vocabulary for the semantic harmonisation of map-based geodata. The content-related realization of this project is governed by the Thesaurus Editorial Team, which consists of thematic experts from the Geological Survey of Austria. Currently there are 4 thematic thesauri available which reflect the basic information of geological maps: lithology, geologic timescale, geologic and tectonic units. All thesauri are available in both German and English* via an open web-application and standardised service interface.

"This is a list of major active Open APIs, or Application programming interfaces, sets of technologies that enable applications to interact with each other."

"Wandora is a general purpose information extraction, management and publishing application based on Topic Maps and Java. Topic maps are hypergraphs with an emphasis on subjects. Wandora stores information in layered and auto-merging topic maps. Wandora has graphical user interface, multiple visualization models, huge collection of information extraction, import and export options, embedded HTTP server with several output modules and open plug-in architecture. Wandora is a FOSS application with GNU GPL license. Wan"

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.

"User Interface is the language of the web"

'We're releasing an API for accessing new AI models developed by OpenAI. Unlike most AI systems which are designed for one use-case, the API today provides a general-purpose "text in, text out" interface, allowing users to try it on virtually any English language task. You can now request access in order to integrate the API into your product, develop an entirely new application, or help us explore the strengths and limits of this technology.'