ontology

Graph-Native Infrastructure for Context and Accountable AI Systems

World's first open-source enterprise world model.

The context orchestration layer powered by hypergraphs. Build a unified semantic context layer where agentic outcomes are deterministic and agent behavior is not just traceable, but cryptographically verifiable.

Give your AI agent n8n superpowers. 537 nodes with full schemas, 7,700+ templates, Git-like sync, and TypeScript workflows.

Protege Desktop

Support agile Ontology DataOps Based on Flink, DataX and Flink-CDC with Web-UI

JSON-LD TypeScript types for Schema.org vocabulary

All-in-One Multimodal Parsing Engine + Ontology-Powered, LLM Wiki-Driven AI-Ready Knowledge Engine

Official Go implementation of the Ontology protocol. https://dev-docs.ont.io/#/

Node graphs, OSINT data mining, and plugins. Connect unstructured and public data for transformative insights. The rewrite can be found @ osintbuddy/osintbuddy

The webprotege code base

Configurable Generation of Synthetic Schemas and Knowledge Graphs at Your Fingertips

The Financial Industry Business Ontology (FIBO) defines the sets of things that are of interest in financial business applications and the ways that those things can relate to one another. In this way, FIBO can give meaning to any data (e.g., spreadsheets, relational databases, XML documents) that describe the business of finance.

A curated list of ontology things

Information Integration Tool

(subjective) overview of projects which are related both to python and semantic technologies (RDF, OWL, Reasoning, ...)

AI-native ontology engine: a Rust MCP server with tools for building, validating, querying, and reasoning over RDF/OWL ontologies. In-memory Oxigraph triple store, native OWL2-DL tableaux reasoner, SHACL validation, SPARQL, versioning. Single binary, no JVM.

Digital Buildings (ontology and SDK) currently being used by Google internally to manage our own buildings.

First Open-Source Industry-Specific Model for Semiconductors

Repository for the Human Disease Ontology.