ArangoDB vs TerminusDB

Both are multiple databases. ArangoDB (2012-03, BUSL-1.1, C++) ranks #2 this month; TerminusDB (2019-10, Apache-2.0, Prolog) ranks #30. They differ on 24 of 46 surveyed features.

Attribute	ArangoDB #2 = Leader	TerminusDB #30 ▼5 Strong
At a glance
Rank	#2	#30
Score	76.7	53.6
GitHub stars	14.3k	3.4k
Popularity	89.4	62.4
Activity	73.9	62.2
Community	61.2	34.7
Research	82.8	50.0
Fundamentals
Description	A multi-model database supporting graphs, key-value pairs, and documents in a unified JSON-based data model. Offers both an in-memory storage engine and a RocksDB-based engine for larger datasets.	A graph database and document store that builds knowledge graphs from JSON documents. Uses git-like delta encoding with an append-only layered data model, enabling version control and collaboration workflows.
Vendor	ArangoDB Inc	DFRNT
Model	Multiple	Multiple
Kind	database	database
Category	Enterprise	Emerging
First released	2012-03	2019-10
Status	active	active
License	BUSL-1.1	Apache-2.0
Written in	C++	Prolog
Query languages	AQL	WOQL, GraphQL
gdotv support	no	no