.NET Standard 2.0
dotnet add package Semiodesk.Trinity --version
NuGet\Install-Package Semiodesk.Trinity -Version
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.
<PackageReference Include="Semiodesk.Trinity" Version="" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add Semiodesk.Trinity --version
#r "nuget: Semiodesk.Trinity,"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.
// Install Semiodesk.Trinity as a Cake Addin
#addin nuget:?package=Semiodesk.Trinity&version=

// Install Semiodesk.Trinity as a Cake Tool
#tool nuget:?package=Semiodesk.Trinity&version=


Trinity RDF is an application development platform for Microsoft .NET and Mono. It allows to easily build knowledge graph applications based on the RDF Metadata Standard issued by the World Wide Web Consortium (W3C).


Because Trinity RDF is based on open standard technology your data will be vendor-independent and easily exchangable in many years to come. Compared to many propriety graph databases, it has some considerable advantages:

  • Standardized Graph Data Model

    The World Wide Web Consortium is an independent organization which standardizes internet technology such as HTML, CSS, SVG and many more. RDF technology has been continously developed and supported since 2001 and will be receiving support in the long term future. This means your data will be accessible and exchangable in decades.

  • SPARQL Query Language

    Trinity RDF builds on the standardized SPARQL query language for graph databases. It is by design very similar to SQL and therefore very easy to learn. In contrast to the query languages of many property graph databases such as Neo4J, SPARQL is vendor independent and supported by a variety of database systems.

  • Ontologies

    In RDF, ontologies provide powerful and flexible means for describing data structures such as classes, properties and primitive data types. Because ontologies are also stored in RDF, they are independent of the data they describe and can be updated during application runtime.

  • Logical Inferencing

    When compared to traditional data modelling frameworks such as UML, ontologies allow you to define inheritance relationships not only for classes but also for properties. Thea also offer more advanced features modelling features such as stating the equality of objects and transitivity of properties. Many RDF databases can make use of logical reasoning during application runtime to answer queries about facts which have not been explicitly saved. This is very powerful in data integration and business intelligence scenarios.


The Trinity RDF library and tools are all released under the terms of the MIT license. This means you can use it for all kinds of projects, including commercial ones. The source code, documentation and issue tracking can be found at our Github project page.

Technical Support

If you encounter problems with Trinity RDF you can use our issue tracking system. If you are interested in priority support or need some technical expertise, you can contact Semiodesk.

Please ask questions at Stackoverflow using the tag 'trinity-rdf'.

Community & Contributing

We'd like to encourage anyone who is interested in using or contributing to Trinity RDF to join our public mailing list for discussing anything related to this project. If you want to contribute source code, please make sure that you have all the rights for publication under a MIT license and create a pull request at our Github project site.

Product Compatible and additional computed target framework versions.
.NET net5.0 was computed.  net5.0-windows was computed.  net6.0 was computed.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 was computed.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 was computed.  net8.0-android was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed. 
.NET Core netcoreapp2.0 was computed.  netcoreapp2.1 was computed.  netcoreapp2.2 was computed.  netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Standard netstandard2.0 is compatible.  netstandard2.1 was computed. 
.NET Framework net461 was computed.  net462 was computed.  net463 was computed.  net47 was computed.  net471 was computed.  net472 was computed.  net48 was computed.  net481 was computed. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen tizen40 was computed.  tizen60 was computed. 
Xamarin.iOS xamarinios was computed. 
Xamarin.Mac xamarinmac was computed. 
Xamarin.TVOS xamarintvos was computed. 
Xamarin.WatchOS xamarinwatchos was computed. 
Compatible target framework(s)
Additional computed target framework(s)
Learn more about Target Frameworks and .NET Standard.

NuGet packages (3)

Showing the top 3 NuGet packages that depend on Semiodesk.Trinity:

Package Downloads

This library allows Semiodesk.Trinity to use the OpenLink Virtuoso store directly through the ODBC interface.


This package provides an Apache Jena Fuseki store adapter for the Trinity RDF ORM.


This package provides an Ontotext GraphDB store adapter for the Trinity RDF ORM.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last updated 3,787 2/17/2023 748 11/23/2022 612 11/23/2022 1,192 9/14/2022 954 9/8/2022 983 8/11/2022 1,756 9/20/2021 712 5/27/2021 546 4/21/2021 512 4/21/2021 509 4/20/2021 510 4/20/2021 489 3/30/2021 7,312 1/11/2021 591 12/23/2020 579 12/17/2020 1,163 10/20/2020 895 7/17/2020 621 7/10/2020 654 7/9/2020 14,763 3/11/2020 691 3/9/2020 773 3/2/2020 750 1/29/2020 801 12/13/2019
1.0.2 767 12/12/2019
1.0.1 705 11/27/2019
1.0.0 792 10/8/2019
1.0.0-rc009 503 10/7/2019
1.0.0-rc008 564 9/24/2019
1.0.0-rc007 557 8/7/2019
1.0.0-rc006 815 8/29/2018
1.0.0-rc005 1,275 6/22/2018
1.0.0-rc004 871 6/11/2018
1.0.0-rc003 824 6/6/2018
1.0.0-rc002 801 6/5/2018
1.0.0-rc001 659 6/4/2018