Databases with Custom Storage Format · Database of Databases


	AlloyDB OLAP Forked Code OLTP	2022	Relational	Custom	OLAP Forked Code OLTP
	Amelie OLTP	2023	Relational	Custom	OLTP
	BabuDB Abandoned	2008	Key-Value	Custom	Abandoned
	BangDB Multi-Model NoSQL	2015	Key-Value	Custom	Multi-Model NoSQL
BR	BroDB Parody / Joke Abandoned	2024	Relational	Custom	Parody / Joke Abandoned
BU	Bubba Abandoned	1988	Object-Oriented	Custom	Abandoned
	ChromoDB Abandoned	2024	Key-Value	Custom	Abandoned
	cubeSQL Acquired Company	2003	Relational	Custom	Acquired Company
	Epsilla Nearest Neighbor	2023	Array / Matrix	Custom	Nearest Neighbor
	evitaDB AI-Assisted	2020	Document / XML	Custom	AI-Assisted
	EyeDB Abandoned	1992	Object-Oriented	Custom	Abandoned
	FileDB Abandoned	2010	Key-Value	Custom	Abandoned
	Fjall OLTP	2023	Key-Value	Custom	OLTP
	GDBM DBM	1990	Key-Value	Custom	DBM
	HighContext Serverless	2023	Key-Value	Custom	Serverless
	H-Store NewSQL Abandoned OLTP	2006	Relational	Custom	NewSQL Abandoned OLTP
HY	HydrAIDE AI-Assisted	2025	Key-Value	Custom	AI-Assisted
	Illustra Acquired Company OLTP	1992	Relational	Custom	Acquired Company OLTP
	Infinity Nearest Neighbor	2022	Relational	Custom	Nearest Neighbor
	JaguarDB Nearest Neighbor	2017	Array / Matrix, Key-Value	Custom	Nearest Neighbor
JA	JameSQL Abandoned NoSQL	2024	Document / XML	Custom	Abandoned NoSQL
	LanceDB Search Engine AI-Assisted	2023	Document / XML	Custom	Search Engine AI-Assisted
	LogosDB AI-Assisted	2026	Vector	Custom	AI-Assisted
	Mimir Time-Series AI-Assisted	2016	Relational	Custom	Time-Series AI-Assisted
	MongoDB NoSQL AI-Assisted	2009	Document / XML	Custom	NoSQL AI-Assisted
	Multigres Middleware AI-Assisted	2025	Relational	Custom	Middleware AI-Assisted
	Napa	2018	Relational	Custom
	Neon Serverless Forked Code Acquired Company OLTP	2021	Relational	Custom	Serverless Forked Code Acquired Company OLTP
	Netezza OLAP Acquired Company	1999	Relational	Custom	OLAP Acquired Company
	Netlify Database Serverless Hosting Service	2024	Relational	Custom	Serverless Hosting Service
	NodeDB Multi-Model Nearest Neighbor AI-Assisted	2026	Vector, Graph, Array / Matrix, Document / XML, Relational	Custom	Multi-Model Nearest Neighbor AI-Assisted
	NoKV NoSQL AI-Assisted	2024	Key-Value	Custom	NoSQL AI-Assisted
	Numstore Query Engine	2026	Array / Matrix	Custom	Query Engine
	OasysDB Abandoned Nearest Neighbor	2023	Key-Value, Vector	Custom	Abandoned Nearest Neighbor
PI	PI Time-Series Acquired Company	1980	Hierarchical, Relational	Custom	Time-Series Acquired Company
	PieCloudDB OLAP	2021	Relational	Custom	OLAP
	PoloDB NoSQL	2020	Document / XML	Custom	NoSQL
	PostgreSQL OLTP	1986	Relational	Custom	OLTP
	RainStor Acquired Company	2004	Relational	Custom	Acquired Company
	Raphtory OLAP AI-Assisted	2020	Graph	Custom	OLAP AI-Assisted
	RaptorDB Forked Code	2024	Relational	Custom	Forked Code
	Rasdaman	1989	Array / Matrix	Custom
	R:BASE Acquired Company	1981	Relational	Custom	Acquired Company
	RexDB Acquired Company	2006	Relational	Custom	Acquired Company
	RonDB OLTP AI-Assisted	2020	Key-Value, Relational	Custom	OLTP AI-Assisted
	SchoonerSQL Acquired Company OLTP	2007	Relational	Custom	Acquired Company OLTP
	ShannonBase	2024	Relational, Vector	Custom
	SKDB OLTP AI-Assisted	2022	Relational	Custom	OLTP AI-Assisted
	SlateDB AI-Assisted	2024	Key-Value	Custom	AI-Assisted
	SpacetimeDB OLTP AI-Assisted	2023	Relational	Custom	OLTP AI-Assisted
	StarRocks OLAP AI-Assisted	2021	Relational, Column Family / Wide-Column	Hudi, Iceberg, Custom	OLAP AI-Assisted
ST	StormiDB Abandoned NoSQL	2024	Document / XML	Custom	Abandoned NoSQL
	Swarm64 OLAP Acquired Company	2013	Relational	Custom	OLAP Acquired Company
	TDengine Time-Series AI-Assisted	2017	Relational	Custom	Time-Series AI-Assisted
	TidesDB OLTP	2024	Column Family / Wide-Column	Custom	OLTP
	TileDB NoSQL	2014	Array / Matrix	Arrow, Custom	NoSQL
	Tkrzw Abandoned DBM	2020	Key-Value	Custom	Abandoned DBM
	TokuMX Forked Code Acquired Company Abandoned	2013	Document / XML	Custom	Forked Code Acquired Company Abandoned
	TopK Nearest Neighbor Search Engine AI-Assisted	2024	Document / XML	Arrow, Custom	Nearest Neighbor Search Engine AI-Assisted
	TransLattice NewSQL Failed Company	2007	Relational	Custom	NewSQL Failed Company
	Typhon MMAP AI-Assisted	2015	Object-Oriented	Custom	MMAP AI-Assisted
VE	vecdb Nearest Neighbor Search Engine MMAP	2026	Document / XML, Vector	Custom	Nearest Neighbor Search Engine MMAP
	VelarixDB	2024	Key-Value	Custom
	Xata Forked Code AI-Assisted	2020	Relational	Custom	Forked Code AI-Assisted
	YugabyteDB Forked Code OLTP AI-Assisted	2016	Key-Value, Relational	Custom	Forked Code OLTP AI-Assisted