ozekik/awesome-ontology

Awesome Ontology is a curated list — a hand-picked index of links, tools, and resources related to ontologies (structured, machine-readable descriptions of concepts and their relationships). It is not software itself; it is a reference directory that helps people find ontology-related tools, languages, and ready-made ontologies.

The README states it is "A curated list of ontology things" and invites contributions ("Your contribution is welcome!")

What you'll find inside

The list is organized into categories, visible in the table of contents:

Category	What it groups	Example from the README
Ontology Editors	Tools for creating and editing ontologies	Protégé (free, open-source editor)
Ontology Utilities	Helper tools for working with ontologies	LODE (converts OWL ontologies into readable HTML)
Datastore	Storage backends for ontologies	SciGraph (a Neo4j-backed ontology store)
Machine Learning	ML tools for ontologies	OntoLearner (learns ontologies from data using large language models)
Languages	Formal languages used to write ontologies	OWL 2, RDF 1.1, Common Logic
Ontologies & Vocabularies	Ready-made ontologies themselves, sub-categorized	See below
Alignment & Matching	Tools to align/match ontologies	(listed in Contents; details not shown)
Logics	Logical formalisms	(listed in Contents)
Reasoners	Inference engines	(listed in Contents)
Querying	Query tools	(listed in Contents)
Rule & Schema Definition	Rule/schema languages	(listed in Contents)
Programming	Code libraries	(listed in Contents)
Communities	User groups	(listed in Contents)
Related	Related reading	(listed in Contents)

Sub-structure of ontologies

The "Ontologies & Vocabularies" section is further divided into:

• Upper-level ontologies — very general, foundational (e.g., BFO, SUMO)
• Mid-level ontologies — bridging general and specific (e.g., Common Core Ontologies)
• Cross-domain ontologies — spanning many domains (e.g., Wikidata, ConceptNet)
• Domain ontologies — for specific fields (biology, finance, culture, cybersecurity, energy, food/drink)
• Vocabularies — controlled terms (section appears in the Contents)

Within Domain Ontologies, the README explicitly shows sub-categories like:

• Architecture & Built Environment
• Biology, Medicine & Health
• Commerce & Finance
• Culture
• Cybersecurity
• Energy
• Food and Drink (the visible README cuts off mid-entry here)

Notable conventions

The README marks certain entries as "Archived or inactive" — for example, the TopBraid Composer editor series is listed as archived (~2021), and the NeOn Toolkit is noted as last updated in 2011. This helps users avoid outdated tools.

It also includes "See also" pointers to external resources, such as Wikipedia's list of ontology editors and the W3C Wiki's list of ontology lists.

How to use it

This is a go-to bookmark list for anyone exploring ontologies — whether you want to pick an editor, find a ready-made ontology for your domain, choose a querying tool, or learn which formal languages exist.

Note: The README, as provided, is truncated mid-way through the Food & Drink section. The full list likely continues with more domain ontologies, vocabularies, and the remaining Content sections (Alignment & Matching, Logics, Reasoners, Querying, etc.) not detailed in the visible text.