Ontologies, schemas, and data standards are developed across many disciplines and maintained by different communities. This makes it difficult to identify the version in use, assess whether a resource is maintained, and understand how it is adopted or reused.
SchemaScope addresses this challenge through a curated catalog and automated evaluations. It currently covers 2,683 resources across 15 domains, with tools to explore domain connections and compare resources. Evaluations consider FAIR-related properties, ontology quality where applicable, maintenance activity, and adoption. Each evaluation records the version assessed and links to supporting evidence, with archived runs that make changes traceable.
The scores are intended to help people assess how easy a resource is to find, trust, and reuse today; they do not measure its scientific value. The catalog is open to contributions, and its data are available in JSON and DCAT JSON-LD.