Index of Schemas


A time zone ontology
Defines terms for describing timezones and their use in different regions of the world.
AIISO – Academic Institution Internal Structure Ontology
The Academic Institution Internal Structure Ontology (AIISO) provides classes and properties to describe the internal organizational structure of an academic institution.
AIR Policy Language
AIR (AMORD In RDF) is a policy language which provides several classes and properties for defining policies.
Defines terms for describing key metadata about airports such as location, lat/long, elevation and IATA/ICAO codes.
AKT Reference Ontology (Support Ontology)
The AKT Reference Ontology has been designed to support the AKT-2 demonstrator (“AKTive Portal”), and subsequent activities.
AliBaba Metadata Ontology
An Ontology for vCards
This ontology models and represents vCards in RDF using current best practices.
Application Metadata
Defines terms for connecting a web application with the software used to create it.
Association Ontology
The Association Ontology specification provides basic concepts and properties for describing specific associations to something, e.
AtomOwl Vocabulary Specification (Extensions)
Audio Features Ontology
This ontology expresses some common concepts to represent some features of audio signals.
Audio Vocabulary
It is difficult for a browser to extract semantic information about an audio recording described on a web page.


Basic Access Control Ontology
Defines terms for representing access control lists (ACL) for authorization.
Bibliographic Ontology
The Bibliographic Ontology describe bibliographic things on the semantic Web in RDF.
bibtex ontology
Biographical Information Vocabulary
A vocabulary for describing biographical information about people, both living and dead.
Biological Taxonomy Vocabulary (Botany)
This is a specialist botanical variant of the Biological Taxonomy Vocabulary.
Biological Taxonomy Vocabulary (Core)
An RDF vocabulary for the taxonomy of all forms of life.
Book Vocabulary
Defines a few basic terms for describing books and people’s relationships with them.


Call for Anything
A vocabulary to describe calls, such as call for tenders, call for proposals, call for papers, etc.
Call Vocabulary
A vocabulary for all sort of calls (tenders, actions, arms ūüôā and announcements that solicit action.
Car Options Ontology
The COO provides a vocabulary for exposing available configuration options for car models.
This vocabulary defines a set of terms for describing changes to resource descriptions.
Coding Ontology
The Coding Ontology allows for the attachment of codes (e.
Cognitive Characteristics Ontology
The Cognitive Characteristics Ontology is built on top of the Weighted Interests Vocabulary v0.
Collection Description Terms
Defines terms for describing collections of digital or physical objects and their catalogues.
Commerce Vocabulary
The Commerce RDF vocabulary is used to mark up semantic information about metadata related to commerce such as cost, price, currency, purchase process, and the effective date of the currency.
Common Tag
Composition of Identifier Names
CoIN describes schemes for URI construction for resources, based on values of their component properties.
Content Vocabulary
Defines terms to enable content to be represented in RDF including characteristics such as character encodings, document types and binary formats.
Copyright Ontology
The Copyright Ontology models the copyright core concepts for creations, rights and the basic kinds of actions that operate on them.
Coreference Ontology
Defines terms used to group coreferencing URIs together into bundles with a specified canonical URI.
Counter Ontology
The Counter Ontology specification provides basic concepts and properties for describing a general counter concept and some important sub counters, e.
Creative Commons License Vocabulary
Defines terms for describing copyright licenses.
Cryptographic Vocabulary
Defines terms and functions for working with cryptographically encoded data.


D2RQ Mapping Vocabulary
D2RQ is a declarative language to describe mappings between relational database schemata and OWL/RDFS ontologies.
Days of the Week Vocabulary
Defines terms for use when specifying occurrences of events on specific days of the week such as opening times.
DBpedia Ontology
The DBpedia Ontology is a shallow, cross-domain ontology, which has been manually created based on the most commonly used infoboxes within Wikipedia.
DCMI Abstract Model
Delivery Context General Purpose Terms
Defines terms to model the general purpose elements of a Delivery Context.
Delivery Context Hardware Terms
Defines terms to model the hardware elements of a Delivery Context.
Delivery Context Java Terms
Defines terms to model the Java software support elements of a Delivery Context.
Delivery Context Loation Terms
Defines terms to model the location elements of a Delivery Context.
Delivery Context Network Terms
Defines terms to model the network elements of a Delivery Context.
Delivery Context Push Terms
Defines terms to model the push elements of a Delivery Context.
Delivery Context Software Terms
Defines terms to model the software elements of a Delivery Context.
Delivery Context Web Browsing Terms
Defines terms to model the web browsing elements of a Delivery Context.
DOAC – Description Of A Career
Describes the professional capabilities of a worker.
DOAP – Description of a Project
DOAP is a project to create an XML/RDF vocabulary to describe software projects, and in particular open source.
Document Availability Information Ontology
The Document Availability Information Ontology describes the current availability of documents in libraries and similar institutions.
Document List
Dublin Core
All metadata terms maintained by the Dublin Core Metadata Initiative, including properties, vocabulary encoding schemes, syntax encoding schemes, and classes.
Dublin Core Elements
The Dublin Core Metadata Element Set is a vocabulary of fifteen properties for use in resource description.
Dublin Core Types
Provides a general, cross-domain list of approved terms that may be used as values for the Resource Type element to identify the genre of a resource.


Enterprise Competece Organization Schema
The next generation enterprise community needs sets of interconnected data and semantic models to communicate and exchange their knowledge, without the current risk of misinterpretation.
Event Ontology
This ontology is centered around the notion of event, seen here as the way by which cognitive agents classify arbitrary time/space regions.
Exif Data Description Vocabulary
An ontology to describe an Exif format picture data.
Extended FRBR Schema
Extensible Measurement Ontology
A very casual and extensible namespace for dimensions of measurement.


FOAF – Friend of a Friend
The FOAF (“Friend of a Friend”) project is a community driven effort to define an RDF vocabulary for expressing metadata about people, and their interests, relationships and activities.
FRBR – Functional Requirements for Bibliographic Records
This vocabulary is an expression in RDF of the concepts and relations described in the IFLA report on the Functional Requirements for Bibliographic Records (FRBR).


GBV Ontology
The GBV ontology defines some concepts used by the GBV library network (mainly specific identifier properties).
Geographis Ontology
Defines terms for extending other geographic schemas such as geonames.
GOLD Linguistics Vocabulary
Defines terms for describing linguistic data.
GoodRelations Ontology
The GoodRelations ontology provides the vocabulary for annotating e-commerce offerings to sell, lease, repair, dispose, or maintain commodity products and to provide commodity services.
GRDDL Vocabulary
Defines properties and relationships used by GRDDL processors to discover and evaluate transformations.


HTML5 Metadata Terms
RDF Vocabulary for HTML 5 pre-definednames.
HTTP Vocabulary
Contains terms used for describing HTTP messages in detail.


Info Service Ontology
The Information Service Ontology Specification provides basic concepts and properties for describing different information services, e.


Singular and plural label properties, and their inverses.
Language Expression Ontology
An ontology for the encoding of multilingual and multipresentational dictionaries. Vocabulary
A simple vocabulary describing neighbour lists and favourite artists.
Lifecycle Vocabulary
Defines terms that allow the specification of a lifecycle that any resource may pass through.
Lingvoj – languages of the world
This ontology provides ways to use human languages as defined by ISO 639 as resources.
List Functions
Describes CWM functions for testing and manipulating lists.
Local Government Agency Type List (LGATL)
Defines terms for describing the types of agency with whom local authorities might work in partnership to deliver services.
LODE – Linking Open Descriptions of Events
An ontology for publishing descriptions of historical events as Linked Data, and for mapping between other event-related vocabularies and ontologies.
Logic Vocabulary
Defines terms for use with logic programming over RDF data.


Math Functons
Media Vocabulary
It is difficult for a browser to extract semantic information about a media recording described on a web page.
This schema appears to be defunct.
MOAT – Meaning Of A Tag
MOAT (Meaning Of A Tag) provides a Semantic Web framework to publish semantically-enriched content from free-tagging one.
MobileTV ontology
The MobileTV Ontology is designed to model the delivery of video and audio signals to a portable (i.
Money Ontology
Defines terms for describing money and currency.
Music Ontology
The Music Ontology Specification provides main concepts and properties for describing music (i.
Music Vocabulary
A vocabulary, or music ontology, to describe classical music and performances.
MySQL Functons


Named Graph Vocabulary
A vocabulary for describing RDF graphs and a few of their relationships to one another such as equivalency.
National Digital Newspaper Program Vocabulary
To support RDF views for resources in Chronicling America a few vocabulary elements needed to be created when suitable terms couldn’t be found elsewhere.
Provides terms to represent EXIF metadata found in digital images.
Nepomuk Representational Language
Defines the NEPOMUK Representational Language (NRL), a language built on top of RDF/S.
NiceTag ontology
NiceTag is a tagging ontology that uses named graphs to model tag actions, reminiscent of speech acts.


OAuth Vocabulary
Defines terms for describing OAuth consumers, requests and access tokens.
OMDoc ontology
The OMDoc ontology models logical/functional structures of mathematical knowledge, such as formulæ, objects, statements (e.
Ontology for Amateur Radio Operation
Ontology for Innovation
A lightweight ontology to describe innovations, their embodiments, usage, benefits and improvements, along with their applicability to solve problems and fulfil needs
Ontology for Representing Network Entities
Includes OSI Model, Hosts, Address Families, Addresses
Ontology for RFC2622 the Routing Policy Specification Language
OntoMedia Being Representation
OntoMedia Creatures and Monsters
Describes creatures, monsters and beasts.
OntoMedia Expressions
Describes interactions occurring in expressions.
OntoMedia Media Representation
Describes interactions occurring in multimedia.
OntoMedia Space Representation
Denotes areas of landscape.
Open Archives Initiative Object Reuse and Exchange
In the physical world we create, use, and refer to aggregations of things all the time.
Open Provenance Model Vocabulary
OPMV, the Open Provenance Model Vocabulary, provides terms to enable practitioners of data publishing to publish their data responsibly.
OpenVocab is a community maintained vocabulary intended for use on the Semantic Web.
Operating System Environment Vocabulary
This vocabulary provides terms for representing the startup environment for an application such as command line arguments and environment variables.
Ordered List Ontology
The Ordered List Ontology Specification provides basic concepts and properties for describing ordered lists as semantic graphs.
Ordnance Survey
Organizational Ontology
Provides minimal basic terms to support representation of organizational structures, reporting structures, location information and organizational history.
OWL Time
Defines terms that describe intervals of time, instants in time and their relationships.


Personal Link Types
A little RDF vocabulary to deal with URL types from Google’s SocialGraph NodeMapper tool.
PIMO – Personal Information Model
The PIMO Ontology can be used to express Personal Information Models of individuals.
Play Back Ontology
The Play Back Ontology specification provides basic concepts and properties for describing a concepts that are related to the play back domain, e.
PML2 relation ontology
POWDER – Protocol for Web Description Resources
The Protocol for Web Description Resources (POWDER) allows metadata to be associated with groups of resources such as those found on a Web site.
Programmes Ontology
This ontology aims at providing a simple vocabulary for describing programmes.
PROTON (Proto Ontology), System module
Defines high-level system- or meta-primitives, which are likely to be accepted and even hard-coded in particular tools that may use PROTON.
PROTON (Proto Ontology), Top module
Defines terms to represent the most common, basic, and inclusive notions of world knowledge.
PROTON (Proto Ontology), Upper module
Defines terms that extend the proton top module to include classes for common everyday objects and happenings.
Provenance Vocabulary
The Provenance Vocabulary provides classes and properties to describe the provenance of data from the Web.
Pyschometric Profile
An experimental vocabulary for describing common psychometric profiles such as the Political Compass Profile.


RDF Data Cube vocabulary
The Data Cube vocabulary is enables the publication of multi-dimensional data such as statistics on the web in such a way that it can be linked to related data sets and concepts.
RDF Graph Patterns and Templates
This vocabulary defines terms used to describe RDF Graph patterns and templates as used in RDF Query languages (e.
RDF Profiles
A profile is a document that defines a dialect of RDF, that datasets can be judged to conform to or not, and applications can advertise themselves as being able to operate on.
RDF Service Discovery Descriptions
This vocabulary defines terms used to describe RDF services so that they can be discovered.
Recommendation Ontology
The Recommendation Ontology specification provides basic concepts and properties for describing recommendations on/ for the Semantic Web.
Reification Vocabulary
A vocabulary for describing RDF statements.
A vocabulary for describing relationships between people.
ReSIST Resilience Mechanisms Ontology
Represents metadata oriented descriptions of resilience mechanisms as part of the resilience-explicit computing section of work within the ReSIST project
Resource List Ontology
The Resource List ontology describes collections of Items grouped together in Sections and explicitly ordered.
Review Vocabulary
Defines terms for representing reviews and ratings.
RIRO – RDF-in/RDF-out Service Description Vocabulary
Defines terms for describing services that receive RDF as an input, perform some function and output the resultant RDF.
RSA public private keys
SCOVO – Statistical Core Vocabulary
A vocabulary for representing statistical data.
The SEDE Ontology describes Scientific (Scholarly) Events such as Conference, Symposium, Workshop, Seminar, and so on.
The schema used by the Semanlink system.
Semantic Web Publishing Vocabulary
SemWeb Vocab Status
An RDF vocabulary for relating SW vocabulary terms to their status.
SIOC – Semantically-Interlinked Online Communities
The SIOC initiative (Semantically-Interlinked Online Communities) aims to enable the integration of online community information.
SIOC Types
Extends the SIOC Core Ontology (Semantically-Interlinked Online Communities) with new classes and properties for things like address books, bookmarks, event calendars, wikis and playlists.
Situation Ontology
Defines terms for representing contexts or situations, and the things that are contextualized.
SKOS – Simple Knowledge Organization System
SKOS provides a model for expressing the basic structure and content of concept schemes such as thesauri, classification schemes, subject heading lists, taxonomies, folksonomies, and other similar types of controlled vocabulary.
SKOS-XL – SKOS Simple Knowledge Organization System eXtension for Labels
An RDF Schema to syntactically represent SPARQL queries (including SPARQL UPDATE) as RDF triples.
String Processing Ontology
This is an ontology for computable string functions.
SWAN Agents Ontology
Defines software agents, person names and list of agents.
SWAN Citations Ontology
Defines a set of entities useful for referencing scientific publications.
SWAN Collections Ontology
Defines a vocabulary for unordered (Set) and ordered collections (List).
SWAN Discourse Relationships Ontology
Defines a set of relationships that can be used to build discourse and in particular scientific discourse.
SWAN Life Science Entities Ontology
A vocabulary for describing life sciences entities such as genes, proteins, and organisms.
SWAN Pathogenic Narrative Qualifiers
A vocabulary of terms used to qualify pathogenic narratives.
SWAN Provenance, Authoring and Versioning Ontology
Defines terms for basic data provenance, authoring and versioning.
SWAN Qualifiers Ontology
A vocabulary for defining organized terms for performing tagging using controlled vocabularies.
SWAN Research Statemnts Mechanisms Taxonomy Extension
Taxonomy of mechanisms for qualifying Research Statements.
SWAN Research Statements Qualifier Extension
A vocabulary of terms for use when qualifying research statements as hypotheses and claims.
SWAN Scientific iscourse Ontology
Defines terms that describe the elements of scientific discourse such as research questions, statements and comments.
Symbolic Music Notation Ontology
Defines terms for describing sheet music notation.


Tag ontology
Talis Address Vocabulary
Simple vocabulary for representing addresses.
Talis Directory Schema
A vocabulary for describing entries in a directory of library collections.
Talis Library Vocabulary
A simple vocabulary for describing libraries.
The ConServ Ontology
ConServ is a RESTful web-service for managing your context and this ontology models users’ context data and interacting smart spaces.
Theatre Ontology
This ontology provides a vocabulary for describing theatre.
Time Interval
Represents intervals of time.
Time-series Vocabulary
For describing time-series data available through a time-series endpoint.


Ultra-simple Review Vocabulary
A simple vocabulary for expressing opinions such as likes and dislikes.
United States Federal Election Commission Data Schema
A schema for FEC data created by GovTrack.
User Vocabulary
Defines terms for describing users of an application.


Video Vocabulary
It is difficult for a browser to extract semantic information about a video recording described on a web page.
Vocabulary Annotation Vocabulary
A vocabulary for annotating descriptions of vocabularies with examples and usage notes.
Vocabulary of a Friend
VOAF is a vocabulary specification providing elements allowing the description of vocabularies (RDFS vocabularies or OWL ontologies) used in the Linked Data Cloud.
voiD – Vocabulary of Interlinked Datasets
The Vocabulary of Interlinked Datasets (voiD) is a vocabulary and a set of instructions that enables the discovery and usage of linked datasets.


W3C Organizational Structure
Terms to describe the structure of the W3C.
Waiver Vcabulary
Defines properties for use when describing waivers of rights over data and content.
Web Of TrustOntology
The WOT, or Web Of Trust, schema is designed to facilitate the use of Public Key Cryptography tools such as PGP or GPG to sign RDF documents and document their signatures.
Web Service Vocabulary
Defines terms for describing web services and their various interactions such as resource types,representation formats and parameters.
Weighting Ontology
The Weighting Ontology includes a general multiple purpose weight concept.
WGS84 Geo Positioning
A vocabulary for representing latitude, longitude and altitude information in the WGS84 geodetic reference datum.
Word to Subject Mapping Vocabulary
Vocabulary to bridge literal keywords and subjects behind them.


Defines terms that can be used to express XFN microformat data in RDF.
XHTML Enemies Network in RDF
Contains properties analogous to those defined by the XEN profile.
XHTML Vocabulary
A vocabulary containing definitions for relationships and roles used in XHTML documents.
Defines terms for mapping spreadsheets to RDF.
XQuery 1.0, XPath 2.0, and XSLT 2.0 Functions and Operators
Provides identifiers for functions and operators defined by the XQuery 1.


Zoölogical variant of the Biological Taxonomy Vocabulary
This is a specialist zoölogical variant of the Biological Taxonomy Vocabulary.

This index lists schemas that have been described at Schemapedia. Get involved to improve it.