skos

Open Source research tool to search, browse, analyze and explore large document collections by Semantic Search Engine and Open Source Text Mining & Text Analytics platform (Integrates ETL for document processing, OCR for images & PDF, named entity recognition for persons, organizations & locations, metadata management by thesaurus & ontologies, …

Graph Data Science: an abstraction layer in Python for building knowledge graphs, integrated with popular graph libraries – atop Pandas, NetworkX, RAPIDS, RDFlib, pySHACL, PyVis, morph-kgc, pslpython, pyarrow, etc.

Thesaurus and controlled vocabulary browser using SKOS and SPARQL

Browser-based ontology workbench for OWL ontologies and SKOS vocabularies. Streamlit + rdflib, no Java, no Protégé. Bulk operations, OWL-RL reasoning, gist upper-ontology starters, merge-aware imports, interactive vis-network graph.

Python/Django based webapps and web user interfaces for search, structure (meta data management like thesaurus, ontologies, annotations and named entities) and data import (ETL like text extraction, OCR and crawling filesystems or websites)

SKOS-Play allows to print SKOS files in HTML or PDF. It also embeds xls2rdf to generate RDF from Excel.

Validate, convert and improve SKOS vocabularies

An online SKOS editor

A set of documents addressing the structure of and supporting services for xAPI Profiles.

Build, validate, visualize, and publish SKOS taxonomies in your browser — standards-first, single self-contained file, with a REST API and MCP server.

💠 An index for linked open data & standard knowledge descriptions (ontologies, vocabularies, shapes, queries, mappings)

Automatic tagging and analysis of documents in an Apache Solr index for faceted search by RDF(S) Ontologies & SKOS thesauri

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

Create RDF data from Excel spreadsheets - edit SKOS vocabularies, knowledge graph instances, SHACL constraints, OWL ontologies in Excel files. Available as HTTP service, upload form, command-line, or Java API.

Web based editor for SKOS based ontologies

Vocabseditor is a web-based tool for collaborative work on controlled vocabularies development

Command line script for converting Marc21 Classification and Authority records to SKOS/RDF

A YAML-based tree-format for SKOS concept schemes

Transform JSON output from Senzing SDK for use with graph technologies, semantics, and downstream LLM integration

A python abstraction for SKOS vocabularies