Here is one: OpenMetadata uses it extensively to help you catalog the various types of (software-related) entities you have in your organization. Each entity (t

Here is one: OpenMetadata uses it extensively to help you catalog the various types of (software-related) entities you have in your organization. Each entity (tables, alerts, api endpoints..) has been given a set of fields that you can populate (https://docs.open-metadata.org/main-concepts/metadata-standard/schemas https://docs.open-metadata.org/main-concepts/metadata-standa...). The schema language used for this is JSON Schema.