Custom API Graph Database Popularity Ranking

GUN leads with a score of 54.7, followed by Atomic Server (53.1) and Gaffer (49.7) — 13 engines ranked, July 2026.

#	1mo	Name	Score	Tier	Type	License	Language	Query Languages
1	=	GUN	54.7	Strong	Property Graph	MIT	JavaScript	Custom API
2	=	Atomic Server	53.1	Strong	Other	MIT	Rust	Custom API
3	=	Gaffer	49.7	Growing	Other	Apache-2.0	Java	Custom API
4	=	ZipG	42.4	Growing	Other	-	Java	Custom API
5	=	Weaver	34.4	Growing	Other	BSD-3-Clause	C++	Custom API
6	=	agdb	33.2	Growing	Property Graph	Apache-2.0	Rust	Custom API
7	▲2	Akutan	28.1	Emerging	RDF	Apache-2.0	Go	Custom API
8	▲2	RushDB	26.2	Emerging	Property Graph	ELv2	TypeScript	Custom API
9	▼2	OmniGraph	26.1	Emerging	Property Graph	MIT	Rust	Custom API
10	▼2	CogDB	25.6	Emerging	RDF	MIT	Python	Custom API
11	=	KGLite	21.7	Emerging	Property Graph	MIT	Rust	Custom APIopenCypher
12	=	TribleSpace	16.7	Emerging	Other	MIT OR Apache-2.0	Rust	Custom API
13	=	LiveGraph	16.2	Emerging	Other	Apache-2.0	C++	Custom API