C++ Graph Databases, Ranked Monthly

ArangoDB leads with a score of 67.9, followed by Neptune (65.1) and LadybugDB (64.5) — 43 engines ranked, September 2026.

#	1mo	Name	Score	Tier	Type	License	Language	Query Languages
1	=	ArangoDB	67.9	Leader	Multiple	BUSL-1.1	C++	AQL
2	new	Neptune	65.1	Leader	Multiple	Proprietary	C++	GremlinSPARQLopenCypher
3	=	LadybugDB	64.5	Strong	Property Graph	MIT	C++	openCypher
4	▼2	Memgraph	64.5	Strong	Property Graph	BUSL-1.1	C++	openCypher
5	▼1	QLever	63.3	Strong	RDF	Apache-2.0	C++	SPARQL
6	new	Cosmos DB	59.7	Strong	Multiple	Proprietary	C++	GremlinSQL
7	▼2	Kuzu	58.4	Strong	Property Graph	MIT	C++	openCypher
8	▼1	SAP Hana	57.7	Strong	Multiple	Proprietary	C++	GraphScriptSQLopenCypher
9	▲6	RDFox	57.5	Strong	RDF	Proprietary	C++	SPARQL
10	▼4	TigerGraph	56.3	Strong	Property Graph	Proprietary	C++	GSQL
11	▲1	TuGraph	52.1	Strong	Property Graph	Apache-2.0	C++	GQLopenCypher
12	new	Google Cloud Spanner Graph	51.8	Strong	Property Graph	Proprietary	C++	GQLSQL/PGQ
13	new	Google Cloud BigQuery Graph	50.7	Strong	Property Graph	Proprietary	C++	GQLSQL/PGQ
14	▼6	GraphScope	50.7	Strong	Property Graph	Apache-2.0	C++	GremlinopenCypher
15	▼6	DuckPGQ	50.4	Strong	Property Graph	MIT	C++	SQL/PGQ
16	▼2	TuringDB	50.4	Strong	Property Graph	BUSL-1.1	C++	openCypher
17	▼1	NeuG	48.0	Growing	Property Graph	Apache-2.0	C++	openCypher
18	▼7	MarkLogic	47.9	Growing	Multiple	Proprietary	C++	SPARQLSQLXQuery
19	▼9	NebulaGraph	47.0	Growing	Property Graph	Apache-2.0	C++	nGQL
20	▼7	TAO	46.7	Growing	Other	Proprietary	C++	TAO API
21	▼4	gStore	45.8	Growing	RDF	BSD-3-Clause	C++	SPARQL
22	▼3	KatanaGraph	44.5	Growing	Other	BSD-3-Clause	C++	openCypher
23	▼1	ByteGraph	44.0	Growing	Other	Proprietary	C++	Gremlin
24	new	ZipG	43.0	Growing	Other	-	C++	Custom API
25	▼4	Cray Graph Engine	42.9	Growing	Other	Proprietary	C++	SPARQL
26	▼8	Kinetica	42.7	Growing	Multiple	Proprietary	C++	SQL
27	new	Ultipa Graph v5	41.9	Growing	Property Graph	Proprietary	C++	GQLUQL
28	▼5	Rapidminer Graph Lakehouse	41.8	Growing	RDF	Proprietary	C++	SPARQLopenCypher
29	▼3	MillenniumDB	41.5	Growing	Multiple	GPL-2.0	C++	GQLSPARQL
30	new	Huawei Graph Engine Service	41.4	Growing	Property Graph	Proprietary	C++	GremlinopenCypher
31	▼4	Bighorn	41.2	Growing	Property Graph	MIT	C++	openCypher
32	▼8	RyuGraph	40.6	Growing	Property Graph	MIT	C++	openCypher
33	▼13	Sparksee	39.2	Growing	Property Graph	Proprietary	C++	openCypher
34	new	Duck RDF	37.4	Growing	RDF	MIT	C++	SPARQL
35	▼10	Weaver	33.9	Growing	Other	BSD-3-Clause	C++	Custom API
36	▼8	Objectivity/DB	32.4	Growing	Other	Proprietary	C++	DO Query Language
37	new	Parliament	30.5	Growing	RDF	BSD-3-Clause	C++	SPARQL
38	▼9	TurboLynx	25.8	Emerging	Property Graph	MIT	C++	openCypher
39	▼9	G-Tran	24.3	Emerging	Other	Apache-2.0	C++	Gremlin
40	▼9	BangDB	22.9	Emerging	Other	BSD-3-Clause	C++	openCypher
41	▼9	Tentris	18.7	Emerging	RDF	Proprietary	C++	SPARQL
42	▼9	LiveGraph	16.4	Emerging	Other	Apache-2.0	C++	Custom API
43	new	DuckGQL	14.5	Emerging	Property Graph	MIT	C++	GQL

1 additional engine has too little public signal to be ranked.