Custom API Graph Databases, Ranked Monthly

Custom API graph databases, ranked monthly by adoption, activity, community and research signals.

Atomic Server leads with a score of 58.2, followed by GUN (49.2) and Gaffer (48.2) — 18 engines ranked, October 2026.

#	1mo	Name	Score	Tier	Type	License	Language	Query Languages
1	=	Atomic Server	58.2	Strong	Other	MIT	Rust	Custom API
2	=	GUN	49.2	Growing	Property Graph	Zlib OR MIT OR Apache-2.0	JavaScript	Custom API
3	=	Gaffer	48.2	Growing	Other	Apache-2.0	Java	Custom API
4	=	OmniGraph	46.1	Growing	Property Graph	MIT	Rust	Custom API
5	=	ZipG	40.0	Growing	Other	-	C++	Custom API
6	▲1	agdb	34.5	Growing	Property Graph	Apache-2.0	Rust	Custom API
7	▼1	Weaver	33.4	Growing	Other	BSD-3-Clause	C++	Custom API
8	▲3	CogDB	26.9	Emerging	RDF	MIT	Python	Custom API
9	▼1	RushDB	26.9	Emerging	Property Graph	ELv2	TypeScript	Custom API
10	▼1	Akutan	26.3	Emerging	RDF	Apache-2.0	Go	Custom API
11	▲2	KGLite	25.2	Emerging	Property Graph	MIT	Rust	Custom APIopenCypher
12	▼2	Qbix Streams	22.8	Emerging	Property Graph	AGPL-3.0	JavaScript	Custom API
13	▼1	TribleSpace	21.9	Emerging	Other	MIT OR Apache-2.0	Rust	Custom API
14	=	RecallGraph	20.9	Emerging	Property Graph	Apache-2.0	JavaScript	Custom API
15	▲1	TypeGraph	17.6	Emerging	Property Graph	MIT	TypeScript	Custom API
16	▲1	Grust	17.3	Emerging	Property Graph	Apache-2.0	Rust	Custom API
17	▼2	LiveGraph	15.1	Emerging	Other	Apache-2.0	C++	Custom API
18	=	StromaDB	8.4	Emerging	Property Graph	Elastic-2.0	Rust	Custom API