Visualizing ontologies on the Web

Configurable Generation of Synthetic Schemas and Knowledge Graphs at Your Fingertips

A unifying framework for biomedical research knowledge graphs

OntoBricks turns Databricks tables into a materialized knowledge graph with ontology design, R2RML mapping, reasoning, and auto-generated GraphQL APIs.

Schemarama is a project exploring standards-based validation for structured data, especially Schema.org.

Software platform implementing and extending the standards of the Semantic Web.

Contains the development for the Industry 4.0 standards knowledge graph (I40KG). Its current collaborative development is driven by VoCol - http://vocol.iais.fraunhofer.de/sto/

A Semi-Automatic Tool to generate RDF mappings for Opendatasoft's datasets

Knowledge graph extractor: Markdown (or any format) → knowledge graph with RDFS/OWL ontology

Visual Studio Code extension providing editing support for RDF languages and knowledge graphs.

Enterprise ready object mapper for developing RDF knowledge graph applications with .NET

A general Inference API based on two of the most popular Big Data processing engines: Apache Spark and Apache Flink

DBpedia Archivo - Augmented Ontology Archive powered by Databus

CimPal is an open source Java application published by gridDigIt and Licensed under the EUPL-1.2-or-later. It helps CIM implementation by providing tools facilitation the work related to SHACL constraints and identification of changed between different versions of CIM.

Triple pattern matching over non-RDF datasources with inference

Generates RDF4J Vocabulary classes from RDFS or OWL Schemas

Lightweight and friendly .NET library for realizing Semantic Web applications (OWL2, SWRL)

问答系统

Linked Data browser

RDF rules-based metadata extraction framwork for SPARQL endpoints