📝Resource Description Framework (RDF)

• Useful RDF vocabularies/ontologies

RDF databases

• TerminusDB / terminus-store—based on RDF, though use custom store/query APIs. Also support “git-like branching and merging.” Written in Rust.
• Oxigraph—an RDF datastore written in Rust. Supports SPARQL and RDF*
• belayeng/quadstore—an RDF datastore written in JS
• Apache Jena
• Blazegraph Database
• Comparison of triplestores - Wikipedia
• Database of Databases - Triplestore (RDF)
• Datomic / DataScript are triplestores, though entities/attributes don’t have to be IRIs. Datomic also supports transactions and historical queries.