Terms of use.

ontostandard.org is the website of ONTO, an independent institute. It is a static site: it holds documents, measurements and contact details. It takes no orders and no payments.

Documents in the archive may be quoted and shared with attribution and a link to their number.

Measurements and training are provided only under a written agreement, and that agreement governs them.

The site is provided as it is. Each number on it links to the document it comes from; where they differ, the document is authoritative.

Contact: council@ontostandard.org. Updated 2026-10-31.