Knowledge Graphs15 min read•October 19, 2026

Semantic Web, Ontology & Knowledge Graph Resources

A living updated directory of tools, standards, playgrounds, ontologies, and GraphRAG guides.

Dr. Amit Puri

Dr. Amit Puri

Open AGI Stack Founder

Semantic Web, Ontology & Knowledge Graph Resources

1. Interactive Playgrounds & Training

2. Courses, Books & Lecture Material

3. Semantic Web & Linked Data Overview

4. RDF

Serializations

Additional Serializations & Formats

5. RDFS & OWL

6. SHACL & ShEx

7. SPARQL

8. Vocabularies & Metadata Standards

9. Emerging Standards (RDF 1.2 / SHACL 1.2 / SPARQL 1.2)

10. Knowledge Graphs

11. Knowledge Graphs + LLMs (GraphRAG & Extraction)

12. Mapping Relational/Other Data to RDF

13. Ontology Engineering & Design

14. Ontology Editors

15. Reasoners & OWL Libraries

16. Triple Stores, Frameworks & Libraries

Apache Jena

Eclipse RDF4J

RDFLib (Python)

Others

17. Semantic Layer & Enterprise Platforms

18. Metadata Catalogs & Data Governance

19. Public Datasets, Registries & Ontology Catalogs

Linked Open Data Sources

Registries & Directories

20. W3C Semantic Web Tool Wikis

21. Journals, Conferences, Communities & Curated Lists

22. SKOS Extensions & Mapping Standards

23. Vocabulary Construction, Metadata & Cataloguing Standards

Vocabulary & Thesaurus Construction

Dublin Core as a Standard

Cataloguing Rules & Bibliographic Models

24. Metadata Schemas & Element Sets

25. Published Vocabularies, Thesauri & Ontologies

Libraries, Archives & Cultural Heritage

Life Sciences & Health

Agriculture & Environment

Finance & Business

Government, Law & Public Sector

Skills & Occupations

Computing, Engineering & Research Fields

Commerce & Products

Open Taxonomies about Artificial Intelligence

26. Validation, Quality & Visualization Tools

Visualization

27. Articles & Papers

Semantic Web Foundations

SKOS Quality, Alignment & Practice

Context, Relevance & Categorization

Knowledge Graphs, Ontologies & Language Models

Taxonomies & Language Models

Provenance, Truth & the Information Ecosystem

Knowledge Management & Organizing

Data Quality & Metadata Management

Press & Vendor Reporting

28. Intentional Arrangement Essays (Jessica Talisman)

The Framework

Standards & the Data Model

Controlled Vocabularies & Guidelines

Metadata Schemas

Taxonomies

Thesauri

Ontologies

Knowledge Graphs

Published Vocabularies & Registries

Tools & Builds

Context & Knowledge Management

Artificial Intelligence

Provenance, Truth & Society

Filed under topics

#Semantic Web#Ontologies#Knowledge Graphs#RDF & OWL#SKOS#SHACL#SPARQL#GraphRAG
Dr. Amit Puri

Dr. Amit Puri

Author

Open AGI Stack Founder

Researching and architecting autonomous systems, semantic reasoning layers, and enterprise agentic infrastructure. Contributing open-source standards to the Open AGI Stack ecosystem.

LTRRTL