The Knowledge Graph
application platform
for humans and agents

LinkedDataHub is open source, low-code software you can use to manage data,
create visualizations and build apps on RDF Knowledge Graphs.
People get hypertext. Agents get data. Same URIs, same API.

Get started  
For researchers and data scientists

RDF-native FAIR data environment

  • Copy Linked Data resources into your personal dataspace
  • Create data-driven content interactively
  • Create customized collections backed by SPARQL queries
  • Navigate SPARQL results intuitively using the parallax navigation
  • Import tabular data and turn it into Linked Data
For developers and data publishers

Low code application development

  • Customize the UI with few lines of declarative stylesheets
  • Configure data editing forms using SPARQL-based templates
  • Create or import ontologies to model your domain
  • Use the standard SPARQL 1.1 APIs to query and manage data
  • Control access using built-in authentication and authorization
For AI agents and their builders

Machine-readable by architecture

  • Read any document as RDF via content negotiation, no scraping
  • Query with standard SPARQL 1.1, answers computed from facts
  • Write through declarative updates you can review and log
  • Authenticate like any other user via WebID or OpenID Connect
  • Drive it from AI assistants via the Web-Algebra MCP server

Uniform user experience

Powerful features

User interface
  • Form-based RDF editing
  • Text search and resource lookup
  • HTML and SPARQL editors
  • SPARQL-based interactive charts
  • Parallax navigation
  • Faceted filters for SPARQL results
Data management
  • Block-based structured content editor
  • Integrated Linked Data browser
  • RDF resource copy into the local dataspace
  • Ontology editor
  • SPIN and SHACL data quality constraints
  • Imports of CSV and RDF data
Development
  • WebID and OpenID Connect authentication
  • Graph-level access control and requests
  • Rich library of extensible UI components
  • Ontology-driven domain model
  • SPARQL-based templates for editing forms
  • Command line interface
Infrastructure & agents
  • SPARQL endpoint
  • Read-write Linked Data API
  • HTML and RDF from the same URIs
  • MCP server for AI assistants via Web-Algebra
  • Linked Data proxy and SPARQL result cache
  • Docker- and AWS-based deployment

Comparison

Metaphactory LinkedDataHub Wikibase
Store and publish Linked Data ✔ ✔ Using extensions
Edit RDF data ✔ ✔ ✘
Query with SPARQL ✔ ✔ Using extensions
Create and import ontologies ✔ ✔ ✘
Create data-driven content Using proprietary template language ✔ Using extensions
Customize UI Using proprietary template language Using standard W3C stylesheets Using product-specific code
License Commercial Open-source (Apache 2.0) Open-source (GNU)

Developed by AtomGraph AtomGraph