Write context once. Run agents anywhere. Discover the power of holonic context graphs and dramatically reduce your token usage.

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

Protege Desktop

Semantica 🧠 • Build AI systems that can explain, trace, and justify every decision. Knowledge graphs, context graphs, reasoning engines, provenance, and governance for production AI.

JSON-LD TypeScript types for Schema.org vocabulary

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

KWeaver Core is a harness-first foundation for enterprise decision agents. It turns fragmented data, knowledge, tools, and policies into governed context, safe execution, and verifiable feedback loops. With semantic modeling, real-time access, runtime control, and TraceAI, it helps AI systems reason, adapt, and act reliable in complex enterprises.

The webprotege code base

Configurable Generation of Synthetic Schemas and Knowledge Graphs at Your Fingertips

A curated list of ontology things

Information Integration Tool

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.

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

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.

Information extraction from English and German texts based on predicate logic

Wizard for documenting ontologies. WIDOCO is a step by step generator of HTML templates with the documentation of your ontology. It uses the LODE environment to create part of the template.

Wikidata client library for Python