Semantic Web Python Packages

rdflib

RDFLib is a Python library for working with RDF, a simple yet powerful language for representing information.

extruct

Extract embedded metadata from HTML markup

curies

🐸 Idiomatic conversion between URIs and compact URIs (CURIEs) in Python

pyld

JSON-LD processor written in Python

pronto

A Python frontend to (Open Biomedical) Ontologies.

sssom-pydantic

🐍 An elegant implementation of SSSOM, based on Pydantic

lightrdf

A fast and lightweight Python RDF parser which wraps bindings to Rust's Rio using PyO3

ssslm

A simple standard for sharing literal mappings (SSSLM)

pyjelly

Fast RDF serialization for Python

orionbelt-ontology-builder

Browser-based ontology workbench for OWL ontologies and SKOS vocabularies. Streamlit + rdflib, no Java, no Protégé. OWL-RL reasoning, 22 SKOS validation checks, read-only SPARQL console, bulk operations, gist upper-ontology starters, merge-aware imports, interactive vis-network graph.

ontobio

python library for working with ontologies and ontology associations

rdfpandas

RdfPandas is a module providing RDF support for Pandas

obographs

A Pydantic model for OBO Graph JSON

ttl3d

Turn any Turtle / RDF graph into a self-contained, offline HTML viewer with 3D and 2D views

curies-processing

Pre- and post-processing configuration for prefixes, CURIEs, and URIs

purrdf

PurRDF — one RDF 1.2 engine, one behavior, in Rust, Python, WebAssembly and C. Deterministic BM25 full-text search, exact GeoSPARQL 1.1 and embedding kNN answered from SPARQL, in-process, over one dataset: the three jobs a triple store usually kept PostgreSQL beside it for. Plus native codecs, RDFC-1.0, SHACL, ShEx, entailment and GTS transport.

cow-csvw

Integrated CSV to RDF converter, using CSVW and nanopublications

linkml-model

Link Modeling Language (LinkML) model

ramose

RAMOSE is an application for creating REST APIs on top of SPARQL endpoints

sstim

SSTIM: the open formalized knowledge standard for describing sensory stimulation. RDF vocabulary, SHACL profiles, JSON-LD context, and SSTIM Workbench, its open reference environment. Developed in the W3C Sensory Stimulation Vocabulary Community Group.

dosync

Open protocol that lets AI agents act on physical devices — explainable resolution, deployment policy, and a tamper-evident audit log. Domain-agnostic.

sparqltransformer

Python version of SPARQL Transformer

cybedtools

Reproducible pipeline for ingesting and analyzing cybersecurity workforce and learning frameworks via JSON-LD and SPARQL

pyldmod

JSON-LD processor written in Python