research:backend

Promising backends and query-middleware

	serverless usage	runtimes	query languages	schema	storage backends	serialisation	immutable data	notes
NocoDB	yes	js	rest, (graphql), sql	sql	sqlite, postgres, mysql	db primitives	no
Nextcloud	yes	js, php	rest	none		odt, xlsx, csv	(versioning)
specialist-server	(yes)	(js), jvm, (bb)	graphql	spec, (graphqlsdl)	independent	edn, json, yaml	backend dependent	small, readable codebase
pyramid	yes	js, jvm, bb	datalog, eql	free	independent	edn entity maps	optional	thin library
oxigraph	yes	js, rust, py	sparql	free	rocksdb	quads	no
xtdb	no	jvm	datalog, sparql, sql	free	many	edn records, json, yaml	yes (bitemporal)	good experience
fluree db	yes	js, jvm, bb	sparql, graphql, flureeql	fluree schema	fluree ledger	json-ld	yes (timetravel queries)
solid	(yes)	js, …		?	pods			?
comunica	yes	js	sparql, graphql	?	?			?
jena/aristotle	no	jvm	sparql	(rdf, owl)	jena	rdf, owl	no