DBDB.io The Encyclopedia of Database Systems · Est. 2017
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Database of Databases

373 Systems Found

Databases Available for All OS with Java VM or with Docume...
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OLAP
2000 Relational Hosted Custom API, HTTP / REST, SQL
OLAP
abhot
Time-Series Forked Code Abandoned Project
2017 — — HTTP / REST
Time-Series Forked Code Abandoned Project
AceBase
Web Browser
2018 Document / XML Linux Custom API
Web Browser
Aerospike
NoSQL AI-Assisted
2009 Document / XML, Key/Value, Vector Linux Custom API
NoSQL AI-Assisted
AgensGraph
Forked Code Multi-Model Acquired Company
2013 Document / XML, Graph, Key/Value, Relational Linux, macOS, Windows Cypher, SQL
Forked Code Multi-Model Acquired Company
AlaSQL
AI-Assisted
2014 Document / XML, Relational — SQL
AI-Assisted
AlloyDB
OLAP Forked Code OLTP
2022 Relational Hosted HTTP / REST, SQL, Stored Procedures
OLAP Forked Code OLTP
Amisa Server
Failed Company
2014 Document / XML Hosted —
Failed Company
AnnaDB
Abandoned Project NoSQL
2021 Document / XML Linux Custom API
Abandoned Project NoSQL
AnnDB
Nearest Neighbor Search
2020 Vector — HTTP / REST
Nearest Neighbor Search
AnuDB
Serverless NoSQL
2025 Document / XML Linux Custom API
Serverless NoSQL
Apollo
2014 Document / XML — —
ArangoDB
Multi-Model AI-Assisted
2011 Document / XML, Graph, Key/Value Linux, macOS, Solaris, Windows Custom API, HTTP / REST, Command-line / Shell
Multi-Model AI-Assisted
ArcadeDB
Forked Code AI-Assisted
2021 Document / XML, Graph, Key/Value, Relational All OS with Java VM Cypher, HTTP / REST, SQL
Forked Code AI-Assisted
Asami
2018 Graph All OS with Java VM Custom API
AsterixDB
OLAP AI-Assisted
2009 Document / XML All OS with Java VM Custom API
OLAP AI-Assisted
AverageDB
Parody / Joke
2024 Document / XML Hosted HTTP / REST
Parody / Joke
AvionDB
Abandoned Project Peer-to-Peer
2020 Document / XML — Custom API
Abandoned Project Peer-to-Peer
AwaDB
Abandoned Project Nearest Neighbor Search
2023 Document / XML, Vector — Custom API
Abandoned Project Nearest Neighbor Search
Bagri
Abandoned Project
2014 Document / XML All OS with Java VM —
Abandoned Project
BaraDB
Multi-Model AI-Assisted
2026 Column Family / Wide-Column, Document / XML, Graph — —
Multi-Model AI-Assisted
BaseX
AI-Assisted
2007 Document / XML — XQuery
AI-Assisted
Basic
2023 Document / XML Hosted Custom API
BBoxDB
AI-Assisted
2015 Array / Matrix All OS with Java VM Custom API, Command-line / Shell
AI-Assisted
BergDB
2013 Document / XML — —
Berkeley DB
Acquired Company OLTP DBM
1994 Document / XML, Key/Value AIX, Android, BSD, DOS, HP-UX, iOS, Linux, macOS, Solaris, VxWorks, Windows, z/OS Custom API, SQL, PL/SQL
Acquired Company OLTP DBM
BigchainDB
Abandoned Project Blockchain
2015 Document / XML, Key/Value — HTTP / REST
Abandoned Project Blockchain
BigQuery
OLAP Serverless
2010 Document / XML Hosted SQL
OLAP Serverless
Bleve
Search Engine AI-Assisted
2014 Document / XML, Vector Linux, macOS, Windows Custom API
Search Engine AI-Assisted
BlinkDB
Abandoned Project
2012 Relational All OS with Java VM SQL
Abandoned Project
BlobCity
Failed Company
2015 Document / XML, Relational Windows SQL
Failed Company
Blueflood
Time-Series Abandoned Project
2013 Column Family / Wide-Column All OS with Java VM HTTP / REST
Time-Series Abandoned Project
Cachegrand
Cache
2018 Key/Value Linux HTTP / REST
Cache
CamaDB
Web Browser Abandoned Project NoSQL
2021 Document / XML — Custom API
Web Browser Abandoned Project NoSQL
CapyDB
Nearest Neighbor Search
2024 Document / XML Hosted Custom API
Nearest Neighbor Search
Cassandra
NoSQL AI-Assisted
2008 Key/Value, Column Family / Wide-Column All OS with Java VM Custom API
NoSQL AI-Assisted
CastleDB
2012 Document / XML — HTTP / REST
Cedalio
Blockchain
2022 Document / XML Hosted GraphQL
Blockchain
ChaiSQL
2018 Document / XML — SQL
chDB
OLAP Acquired Company AI-Assisted
2023 Relational Linux SQL
OLAP Acquired Company AI-Assisted
Chroma
Nearest Neighbor Search AI-Assisted
2022 Document / XML Linux Custom API
Nearest Neighbor Search AI-Assisted
Chronicle Map
AI-Assisted
2014 Key/Value All OS with Java VM —
AI-Assisted
ClickHouse
OLAP AI-Assisted
2016 Relational Linux Custom API, HTTP / REST, SQL, Command-line / Shell
OLAP AI-Assisted
CloseVector
Nearest Neighbor Search
2023 Document / XML, Vector Linux HTTP / REST
Nearest Neighbor Search
Cloudant
Acquired Company OLTP NoSQL
2008 Document / XML — HTTP / REST
Acquired Company OLTP NoSQL
Cloud Datastore
NoSQL
2013 Document / XML Hosted Custom API, HTTP / REST, SQL
NoSQL
Cloud Firestore
Serverless
2017 Document / XML Hosted Custom API
Serverless
CloudKit
Abandoned Project
2008 Document / XML — —
Abandoned Project
CloudSearch
Search Engine
2012 Document / XML Hosted Custom API
Search Engine
CloverDB
NoSQL AI-Assisted
2022 Document / XML — Custom API
NoSQL AI-Assisted
Clusterpoint
Failed Company NoSQL
2006 Document / XML Hosted —
Failed Company NoSQL
CodernityDB
2011 Key/Value — HTTP / REST
Coherence
Cache Acquired Company
2000 Object-Oriented All OS with Java VM Custom API, HTTP / REST
Cache Acquired Company
Compass
Abandoned Project Search Engine
2006 Document / XML, Object-Oriented macOS Custom API
Abandoned Project Search Engine
ComputeDB
OLAP Acquired Company Abandoned Project
2015 Relational All OS with Java VM SQL
OLAP Acquired Company Abandoned Project
Concourse
2012 Document / XML — Custom API
CortexDB
Multi-Model NoSQL
2014 Document / XML, Key/Value — —
Multi-Model NoSQL
Couchbase
NoSQL
2010 Key/Value, Document / XML Linux, macOS, Windows Custom API
NoSQL
CouchDB
NoSQL
2005 Document / XML Android, BSD, iOS, Linux, macOS, Solaris, Windows HTTP / REST
NoSQL
CrateDB
2014 — All OS with Java VM Command-line / Shell, HTTP / REST, SQL
CursusDB
Abandoned Project NoSQL
2023 Document / XML BSD, Linux, macOS, Windows SQL
Abandoned Project NoSQL
Daffodil DB
2003 Relational All OS with Java VM SQL
Dare-DB
NoSQL
2024 Key/Value Linux HTTP / REST
NoSQL
Datalevin
2020 Document / XML All OS with Java VM Datalog
Datomic
Acquired Company
2012 Key/Value All OS with Java VM Datalog
Acquired Company
Db2
1983 Document / XML, Relational Linux, macOS, Windows, z/OS SQL, Stored Procedures
DB4IoT
2016 Document / XML Hosted HTTP / REST
db4o
Acquired Company Abandoned Project
2000 Object-Oriented All OS with Java VM —
Acquired Company Abandoned Project
DB5
Abandoned Project Nearest Neighbor Search
2023 Document / XML, Vector — Custom API
Abandoned Project Nearest Neighbor Search
dbeel
Abandoned Project NoSQL
2023 Document / XML — Custom API
Abandoned Project NoSQL
DBreeze
Multi-Model
2012 Document / XML, Key/Value Linux, macOS, Windows Custom API
Multi-Model
DefraDB
Peer-to-Peer AI-Assisted
2019 Document / XML Linux GraphQL
Peer-to-Peer AI-Assisted
DensoDB
Abandoned Project
2012 Document / XML — —
Abandoned Project
Derby
Acquired Company Abandoned Project OLTP
1997 Relational All OS with Java VM SQL
Acquired Company Abandoned Project OLTP
DiceDB
OLTP
2022 Key/Value — Custom API, HTTP / REST
OLTP
DiggyDB
Abandoned Project
2021 Document / XML Linux Custom API
Abandoned Project
Djondb
Abandoned Project
2012 Document / XML Linux, macOS, Windows —
Abandoned Project
Dnaerys
— — All OS with Java VM RPC
DocumentDB
Middleware NoSQL AI-Assisted
2023 Document / XML — Custom API
Middleware NoSQL AI-Assisted
DocumentDB
2019 Document / XML Hosted Custom API, Command-line / Shell
Doxa
Abandoned Project
2021 Document / XML — Custom API
Abandoned Project
Drill
OLAP AI-Assisted
2012 Column Family / Wide-Column Linux, macOS, Windows SQL, HTTP / REST
OLAP AI-Assisted
Druid
OLAP AI-Assisted
2011 Column Family / Wide-Column AIX, BSD, Hosted, HP-UX, Linux, macOS, Solaris Custom API, SQL, HTTP / REST
OLAP AI-Assisted
DynamoDB
OLTP NoSQL
2012 Document / XML, Key/Value Hosted Command-line / Shell, Custom API, PartiQL, SQL
OLTP NoSQL
Earthstar
Peer-to-Peer
2020 Document / XML — Custom API
Peer-to-Peer
EaseDB
Abandoned Project
2013 Document / XML — HTTP / REST
Abandoned Project
EasyDB
Failed Company
2019 Document / XML Hosted Custom API
Failed Company
EcoDB
Failed Company
2018 Document / XML Linux, Windows HTTP / REST
Failed Company
Ehcache
Cache Acquired Company
2003 Key/Value All OS with Java VM Custom API
Cache Acquired Company
EJDB
2012 Key/Value, Document / XML Android, BSD, iOS, Linux, macOS, Windows Custom API, HTTP / REST
ekoDB
2024 Document / XML Hosted HTTP / REST
Elasticsearch
Search Engine NoSQL AI-Assisted
2004 Document / XML All OS with Java VM Custom API
Search Engine NoSQL AI-Assisted
Endatabas
OLAP Abandoned Project OLTP Immutable
2023 Document / XML, Relational Linux, macOS HTTP / REST, SQL
OLAP Abandoned Project OLTP Immutable
Endeca
OLAP Acquired Company
1999 Document / XML — Custom API
OLAP Acquired Company
Engram
AI-Assisted
2026 Graph Hosted, Linux Custom API, HTTP / REST
AI-Assisted
EnnoDB
Abandoned Project
2012 Key/Value Linux HTTP / REST
Abandoned Project
EraDB
Acquired Company
2019 Document / XML — SQL
Acquired Company
Espresso
2011 Document / XML All OS with Java VM HTTP / REST
EuclidesDB
Abandoned Project
2018 Array / Matrix Linux, macOS Custom API, HTTP / REST
Abandoned Project
EventSourcingDB
Time-Series Immutable
2022 Document / XML Hosted, Linux, macOS, Windows Custom API
Time-Series Immutable
evitaDB
AI-Assisted
2020 Document / XML All OS with Java VM, Hosted RPC, Custom API, HTTP / REST, GraphQL
AI-Assisted
eXist-db
NoSQL AI-Assisted
2000 Document / XML — XQuery
NoSQL AI-Assisted
ExtendDB
Middleware AI-Assisted
2026 Key/Value, Document / XML Linux, macOS Custom API, HTTP / REST
Middleware AI-Assisted
eXtremeDB
Cache Time-Series OLTP Middleware
2001 Column Family / Wide-Column, Entity-Relationship, Key/Value, Relational AIX, All OS with Java VM, Android, HP-UX, iOS, Linux, QNX, Solaris, VxWorks, Windows Command-line / Shell, Custom API, HTTP / REST, RPC, SQL, Stored Procedures
Cache Time-Series OLTP Middleware
Fallen-8
Abandoned Project
2011 Graph — HTTP / REST
Abandoned Project
FaunaDB
Serverless Failed Company
2012 Document / XML, Graph, Key/Value, Relational All OS with Java VM, Hosted GraphQL
Serverless Failed Company
FBase
Time-Series
2022 Relational All OS with Java VM SQL
Time-Series
FeatureBase
Abandoned Project Search Engine
2017 Relational Hosted, Linux Custom API, HTTP / REST, SQL, Command-line / Shell
Abandoned Project Search Engine
FerretDB
AI-Assisted
2021 Document / XML — Custom API
AI-Assisted
FinchDB
2015 Document / XML — —
Firebase
Acquired Company NoSQL
2011 Document / XML — Custom API
Acquired Company NoSQL
Fireproof
Peer-to-Peer AI-Assisted
2022 Document / XML — Custom API
Peer-to-Peer AI-Assisted
FirstSQL/J
Failed Company
2001 Relational All OS with Java VM Command-line / Shell, Custom API, SQL, Stored Procedures
Failed Company
FleetDB
Abandoned Project
2009 Document / XML — Custom API
Abandoned Project
Fluree
Blockchain AI-Assisted
2017 Document / XML, Graph, Triplestore / RDF, Relational All OS with Java VM SPARQL, Custom API, SQL, HTTP / REST, GraphQL
Blockchain AI-Assisted
Fongo
Abandoned Project NoSQL
2012 Document / XML — Custom API
Abandoned Project NoSQL
FuelDB
Abandoned Project
2014 Document / XML Linux —
Abandoned Project
FusionDB
Abandoned Project
2019 Document / XML — XQuery
Abandoned Project
Gaffer
Abandoned Project
2016 Entity-Relationship All OS with Java VM HTTP / REST
Abandoned Project
Galaxybase
2013 Graph All OS with Java VM Cypher, Gremlin
Gel
OLAP AI-Assisted
2018 Relational — Custom API, SQL, HTTP / REST, Command-line / Shell, GraphQL
OLAP AI-Assisted
Genesis DB
Streaming
2025 Document / XML Linux, macOS Custom API, HTTP / REST
Streaming
Geode
Cache Forked Code OLTP NoSQL
2015 Key/Value All OS with Java VM Custom API
Cache Forked Code OLTP NoSQL
GlobalsDB
2011 Array / Matrix All OS with Java VM Custom API
Gnocchi
Time-Series Middleware
2014 Relational — HTTP / REST
Time-Series Middleware
GoatDB
Web Browser AI-Assisted
2024 Document / XML — Custom API
Web Browser AI-Assisted
GraphDB
2000 Triplestore / RDF All OS with Java VM SPARQL
Graphik
Abandoned Project
2020 Document / XML — GraphQL
Abandoned Project
GreptimeDB
Time-Series AI-Assisted
2022 Relational Linux SQL, HTTP / REST
Time-Series AI-Assisted
GridDB
2011 Key/Value Linux Custom API, SQL, Command-line / Shell, HTTP / REST
H2
2004 Relational All OS with Java VM SQL
Hadoop
OLAP AI-Assisted
2006 — All OS with Java VM Custom API
OLAP AI-Assisted
HarperDB
Serverless NoSQL
2017 Document / XML Linux, macOS, Windows SQL
Serverless NoSQL
Hazelcast
Cache
2008 Key/Value All OS with Java VM Custom API
Cache
HBase
NoSQL
2007 Column Family / Wide-Column All OS with Java VM Custom API
NoSQL
Heroic
Abandoned Project
2015 Key/Value All OS with Java VM Custom API
Abandoned Project
HighContext
Serverless
2023 Key/Value Hosted HTTP / REST
Serverless
hipsterDB
Parody / Joke Abandoned Project
2013 Key/Value — HTTP / REST
Parody / Joke Abandoned Project
HiRDB
1994 Document / XML, Relational — —
Hive
OLAP
2010 Relational All OS with Java VM SQL
OLAP
HoraeDB
Time-Series Abandoned Project
2021 Relational — HTTP / REST, SQL
Time-Series Abandoned Project
HorizonDB
Geospatial
2025 Document / XML — Custom API
Geospatial
HugeGraph
Middleware AI-Assisted
2017 Graph — HTTP / REST, Gremlin
Middleware AI-Assisted
Husky
Time-Series
2020 Document / XML — Custom API
Time-Series
HyperDB
Parody / Joke Nearest Neighbor Search
2023 Document / XML, Vector — —
Parody / Joke Nearest Neighbor Search
HyperSQL
2001 Relational All OS with Java VM SQL
iBoxDB
Serverless Mobile NoSQL
2014 Document / XML All OS with Java VM, Android, Linux, Windows Custom API
Serverless Mobile NoSQL
IceFireDB
2021 Key/Value — Custom API, HTTP / REST
Immudb
Immutable AI-Assisted
2019 Key/Value — HTTP / REST
Immutable AI-Assisted
IMS
OLTP
1966 Hierarchical z/OS Custom API, HTTP / REST, SQL
OLTP
InfinityDB
2002 Key/Value, Graph, Array / Matrix, Hierarchical, Relational All OS with Java VM —
InfluxDB
Time-Series AI-Assisted
2013 Column Family / Wide-Column — Custom API, SQL, HTTP / REST
Time-Series AI-Assisted
InstantDB
Failed Company
1997 Relational All OS with Java VM —
Failed Company
IQrypt
Failed Company
2015 Document / XML Hosted —
Failed Company
Irmin
2013 Document / XML Linux, macOS Custom API, Command-line / Shell
JameSQL
NoSQL
2024 Document / XML Linux Custom API
NoSQL
JanusGraph
Acquired Company
2012 Graph All OS with Java VM Gremlin
Acquired Company
JasDB
2013 Document / XML Android HTTP / REST
jasonisnthappy
OLTP
2025 Document / XML Linux Custom API
OLTP
Jena
AI-Assisted
2000 Triplestore / RDF All OS with Java VM Datalog, SPARQL
AI-Assisted
JSDB
Abandoned Project
2020 Document / XML — Custom API
Abandoned Project
JSONBin.io
2017 Document / XML Hosted HTTP / REST
jsonstore.io
Abandoned Project
2018 Document / XML Hosted HTTP / REST
Abandoned Project
JSqlDb
2017 Document / XML Linux, macOS, Windows —
JustinDB
Abandoned Project
2015 Key/Value Linux HTTP / REST
Abandoned Project
KairosDB
Time-Series
2013 — — HTTP / REST
Time-Series
Kdb+
Acquired Company
1998 Relational Linux, macOS, Solaris, Windows HTTP / REST, SQL
Acquired Company
KenobiDB
Abandoned Project Middleware
2019 Document / XML Linux Custom API
Abandoned Project Middleware
Kerf
2014 — Android, BSD, iOS, Linux SQL, HTTP / REST
Kinetica
OLAP
2009 Relational Linux HTTP / REST, SQL
OLAP
Kinto
NoSQL AI-Assisted
2014 Document / XML — HTTP / REST
NoSQL AI-Assisted
Krati
Abandoned Project OLTP NoSQL
2010 Key/Value All OS with Java VM —
Abandoned Project OLTP NoSQL
Kronotop
NoSQL
2023 Document / XML — Custom API
NoSQL
KurrentDB
Time-Series AI-Assisted
2012 Document / XML Windows —
Time-Series AI-Assisted
KVdb
NoSQL
2018 Key/Value Hosted HTTP / REST
NoSQL
Kyuubi
Middleware AI-Assisted
2017 Relational All OS with Java VM SQL
Middleware AI-Assisted
LanceDB
Search Engine AI-Assisted
2023 Document / XML Linux Custom API, SQL
Search Engine AI-Assisted
Lazer
2013 Document / XML Linux Custom API
LazyDB
2020 Document / XML Hosted Custom API
LedisDB
Abandoned Project NoSQL
2014 Key/Value Linux, macOS Custom API, HTTP / REST, Command-line / Shell
Abandoned Project NoSQL
LesbianDB
Abandoned Project
2022 Document / XML Windows Custom API
Abandoned Project
LightDB
NoSQL
2021 Document / XML — Custom API
NoSQL
LiteDB
2014 Document / XML Windows SQL
lnx
Search Engine
— Document / XML Linux —
Search Engine
LokiJS
Abandoned Project
2013 Document / XML — —
Abandoned Project
LonaDB
NoSQL
2023 Document / XML Linux Custom API
NoSQL
LowDB
2014 Document / XML — —
Lucene
Search Engine MMAP AI-Assisted
1999 Document / XML All OS with Java VM Custom API
Search Engine MMAP AI-Assisted
LungoDB
2019 Document / XML — Custom API
MangoDB
Parody / Joke Abandoned Project NoSQL
2012 Document / XML Linux Custom API
Parody / Joke Abandoned Project NoSQL
Manticore Search
Search Engine
2017 Relational Linux, macOS, Windows HTTP / REST, SQL
Search Engine
MarkLogic
Acquired Company
2001 Document / XML, Triplestore / RDF — Custom API
Acquired Company
Marqo
Search Engine AI-Assisted
2022 Document / XML, Vector Hosted, Linux Custom API
Search Engine AI-Assisted
Matisse
1986 Document / XML — —
Mckoi SQL Database
Abandoned Project Failed Company
1998 Relational All OS with Java VM SQL
Abandoned Project Failed Company
Meilisearch
Search Engine AI-Assisted
2018 Document / XML Hosted, Linux, macOS Custom API, HTTP / REST
Search Engine AI-Assisted
MemCP
OLAP AI-Assisted
2022 Relational Linux HTTP / REST, SQL
OLAP AI-Assisted
Mimir
Time-Series AI-Assisted
2016 Relational Linux HTTP / REST, PromQL
Time-Series AI-Assisted
MLDB
Acquired Company
2015 — — HTTP / REST, SQL
Acquired Company
MobyDB
2026 Key/Value — Custom API, HTTP / REST
ModeShape
Abandoned Project
2008 Object-Oriented All OS with Java VM Custom API, SQL, HTTP / REST
Abandoned Project
MongoDB
NoSQL AI-Assisted
2009 Document / XML Linux, macOS, Windows Custom API
NoSQL AI-Assisted
NamiDB
NoSQL
2026 Graph Linux, macOS, Windows Cypher, HTTP / REST
NoSQL
NeDB
Abandoned Project
2013 Document / XML — Custom API
Abandoned Project
NEO
2005 Document / XML Linux Custom API
Neo4j
NoSQL AI-Assisted
2007 Graph All OS with Java VM Cypher
NoSQL AI-Assisted
NeoDatis ODB
Abandoned Project
2006 Object-Oriented All OS with Java VM Custom API
Abandoned Project
Neon
Serverless Forked Code Acquired Company OLTP
2021 Relational Hosted, Linux HTTP / REST, PL/SQL, SQL
Serverless Forked Code Acquired Company OLTP
Neptune
2018 Graph, Triplestore / RDF Hosted SPARQL, HTTP / REST, Gremlin
Netlify Database
Serverless Hosting Service
2024 Relational Hosted SQL
Serverless Hosting Service
Nitrite
NoSQL AI-Assisted
2017 Document / XML — Custom API
NoSQL AI-Assisted
NodeDB
Multi-Model Nearest Neighbor Search AI-Assisted
2026 Vector, Graph, Array / Matrix, Document / XML, Relational Linux SQL, Cypher
Multi-Model Nearest Neighbor Search AI-Assisted
Noms
Versioning Abandoned Project
2015 Document / XML — —
Versioning Abandoned Project
NosDB
Abandoned Project
2013 Document / XML Windows Custom API, HTTP / REST
Abandoned Project
NucliaDB
Nearest Neighbor Search Search Engine
2021 Vector — Custom API, HTTP / REST
Nearest Neighbor Search Search Engine
OasysDB
Nearest Neighbor Search
2023 Key/Value, Vector Linux HTTP / REST
Nearest Neighbor Search
ObjectBox
Time-Series Nearest Neighbor Search MMAP Mobile NoSQL
2016 Object-Oriented All OS with Java VM Custom API
Time-Series Nearest Neighbor Search MMAP Mobile NoSQL
ObjectDB
2010 Object-Oriented All OS with Java VM —
ObsessionDB
OLAP Hosting Service
2024 Relational Hosted SQL
OLAP Hosting Service
ODABA
1994 Object-Oriented — Custom API, HTTP / REST
OlegDB
MMAP NoSQL
2014 Key/Value AIX, BSD, Linux, macOS, Solaris, UnixWare, VxWorks HTTP / REST
MMAP NoSQL
OnceDB
Cache Abandoned Project Failed Company
2016 Document / XML — Custom API
Cache Abandoned Project Failed Company
OpenMLDB
2017 Relational Linux SQL, HTTP / REST
OpenSearch
Forked Code Search Engine AI-Assisted
2021 Document / XML All OS with Java VM Custom API, Model Context Protocol
Forked Code Search Engine AI-Assisted
OpenTSDB
Time-Series
2010 Key/Value All OS with Java VM Command-line / Shell, Custom API, HTTP / REST
Time-Series
Oracle RDBMS
1977 Key/Value, Graph, Triplestore / RDF, Document / XML, Relational AIX, HP-UX, Linux, Solaris, Windows SQL
OrbitDB
Peer-to-Peer
2015 Document / XML, Key/Value Linux, macOS Custom API
Peer-to-Peer
OrientDB
Multi-Model Acquired Company NoSQL
2010 Document / XML, Graph, Key/Value, Object-Oriented All OS with Java VM GraphQL, Gremlin, HTTP / REST, SQL, Stored Procedures
Multi-Model Acquired Company NoSQL
OrigoDB
Abandoned Project
2011 Key/Value, Graph, Object-Oriented, Document / XML, Relational Windows Custom API
Abandoned Project
PancakeDB
2021 — Hosted HTTP / REST
PearlDB
Abandoned Project
2015 Key/Value — HTTP / REST
Abandoned Project
pickleDB
2011 Document / XML — Custom API
PicoDB
Abandoned Project
2016 Document / XML — —
Abandoned Project
piladb
Abandoned Project
2015 Object-Oriented — HTTP / REST
Abandoned Project
Pilosa
Abandoned Project
2017 Vector — Custom API, HTTP / REST
Abandoned Project
Pincaster
2010 Document / XML BSD, Linux, macOS HTTP / REST
Pinot
OLAP AI-Assisted
2014 Relational All OS with Java VM SQL
OLAP AI-Assisted
PNUTS
Abandoned Project OLTP NoSQL
2008 Key/Value All OS with Java VM Custom API
Abandoned Project OLTP NoSQL
Pogocache
Cache
2025 Key/Value Linux, macOS Custom API, HTTP / REST
Cache
PointBase
Acquired Company
1998 Relational All OS with Java VM SQL
Acquired Company
PoloDB
NoSQL
2020 Document / XML Linux, macOS, Windows Custom API
NoSQL
Polybase
Blockchain
2022 Document / XML Hosted Custom API
Blockchain
Polypheny
2017 Document / XML, Graph, Relational Linux, macOS, Windows SQL, Cypher, HTTP / REST
PouchDB
Web Browser NoSQL
2010 Document / XML — Custom API
Web Browser NoSQL
PrestoDB
OLAP AI-Assisted
2013 Document / XML, Key/Value, Column Family / Wide-Column, Relational All OS with Java VM SQL
OLAP AI-Assisted
Prometheus
Time-Series AI-Assisted
2012 Key/Value — HTTP / REST, PromQL
Time-Series AI-Assisted
ProtonBase
OLAP
2021 Document / XML, Relational Hosted SQL
OLAP
ProvenDB
Acquired Company Blockchain Middleware
2018 Document / XML Hosted Custom API
Acquired Company Blockchain Middleware
PupDB
Abandoned Project
2019 Key/Value — HTTP / REST
Abandoned Project
PysonDB
Abandoned Project NoSQL
2020 Document / XML Windows Custom API
Abandoned Project NoSQL
Qizx
Acquired Company
2004 Document / XML macOS XPath, XQuery
Acquired Company
QLDB
Abandoned Project Blockchain
2018 Document / XML Hosted PartiQL
Abandoned Project Blockchain
Quadcap Embeddable Database
Failed Company
1999 Relational All OS with Java VM SQL
Failed Company
Quickwit
Acquired Company Search Engine AI-Assisted
2021 Document / XML Linux, macOS Custom API
Acquired Company Search Engine AI-Assisted
RageDB
Abandoned Project
2021 Graph — HTTP / REST
Abandoned Project
RaptorDB
Abandoned Project
2012 Document / XML — Custom API
Abandoned Project
RavenDB
MMAP NoSQL AI-Assisted
2009 Document / XML, Key/Value Linux, macOS, Windows Custom API, HTTP / REST
MMAP NoSQL AI-Assisted
Redcon
2016 Key/Value — HTTP / REST
RedStore
Abandoned Project
2009 Triplestore / RDF — SPARQL, HTTP / REST
Abandoned Project
ReductStore
Time-Series AI-Assisted
2021 Key/Value Linux, macOS, Windows Custom API, HTTP / REST
Time-Series AI-Assisted
RefineDB
Abandoned Project
2021 Document / XML — Custom API
Abandoned Project
Rel
2004 Relational All OS with Java VM Custom API
Relaxo
Abandoned Project
2012 Document / XML — Custom API
Abandoned Project
ResilientDB
Blockchain
2019 Document / XML — GraphQL
Blockchain
Resin Cache
Cache Middleware
1998 Key/Value All OS with Java VM Custom API
Cache Middleware
RethinkDB
Failed Company NoSQL
2009 Document / XML BSD, Linux, macOS, Windows Custom API
Failed Company NoSQL
Rockset
OLAP Acquired Company
2016 Relational Hosted HTTP / REST, SQL
OLAP Acquired Company
RonDB
OLTP AI-Assisted
2020 Key/Value, Relational Hosted, Linux, macOS Custom API, HTTP / REST, SQL
OLTP AI-Assisted
rqlite
AI-Assisted
2014 Relational Linux, macOS, Windows SQL, HTTP / REST
AI-Assisted
RudraDB
Nearest Neighbor Search
2025 Document / XML, Vector Hosted Custom API
Nearest Neighbor Search
RxDB
AI-Assisted
2016 Document / XML — Custom API, GraphQL
AI-Assisted
Rya
Abandoned Project Middleware NoSQL
2012 Triplestore / RDF All OS with Java VM SPARQL
Abandoned Project Middleware NoSQL
SapphireDb
Abandoned Project
2018 Object-Oriented Windows Custom API, HTTP / REST
Abandoned Project
ScalienDB
Abandoned Project Failed Company
2010 Key/Value Linux, Windows HTTP / REST
Abandoned Project Failed Company
SchemafreeSQL
2012 Document / XML Hosted SQL
SchemaJS
NoSQL
2024 Document / XML — Custom API
NoSQL
ScopeDB
2024 Relational Hosted HTTP / REST, SQL
ScratchDB
OLAP Middleware
2023 Document / XML — HTTP / REST, SQL
OLAP Middleware
Scuba
2013 Relational — Custom API, SQL, HTTP / REST
SDB
— Document / XML, Relational — Custom API
SearchBlox
Search Engine
2003 Document / XML Linux, Windows HTTP / REST, SQL
Search Engine
Sedna
Abandoned Project
2003 Document / XML BSD, Linux, macOS, Windows XQuery
Abandoned Project
SenseiDB
Abandoned Project
2012 Relational All OS with Java VM Custom API
Abandoned Project
Sequins
Abandoned Project
2014 Key/Value Linux HTTP / REST
Abandoned Project
SequoiaDB
2011 Document / XML Linux SQL, Command-line / Shell, HTTP / REST
ShardingSphere
AI-Assisted
2016 Relational All OS with Java VM SQL
AI-Assisted
Siaqodb
Abandoned Project Failed Company NoSQL
— Document / XML Windows Custom API
Abandoned Project Failed Company NoSQL
SignalDB
NoSQL AI-Assisted
2023 Document / XML Linux Custom API
NoSQL AI-Assisted
SingleStore
OLAP NewSQL Acquired Company OLTP
2011 Document / XML, Key/Value, Multi-Value, Object-Oriented, Relational, Vector Hosted, Linux HTTP / REST, PL/SQL, SQL
OLAP NewSQL Acquired Company OLTP
Sir.DB
Abandoned Project
2020 Document / XML — Custom API
Abandoned Project
SirixDB
AI-Assisted
2012 Document / XML — XQuery, HTTP / REST
AI-Assisted
SleekDB
2018 Document / XML Linux Custom API
SlyceIO
2023 Document / XML Hosted Custom API
SmallSQL
Abandoned Project
2005 Relational All OS with Java VM —
Abandoned Project
Sneller
2022 Document / XML — SQL
Snowflake
OLAP
2013 Document / XML, Relational Hosted SQL
OLAP
solidDB
Acquired Company OLTP
1992 Relational AIX, Linux, Solaris, Windows Command-line / Shell, Custom API, HTTP / REST, SQL, Stored Procedures
Acquired Company OLTP
Solr
Search Engine NoSQL AI-Assisted
2004 Document / XML Linux, macOS, Windows Custom API
Search Engine NoSQL AI-Assisted
sones GraphDB
Abandoned Project Failed Company
2007 Graph Hosted, Windows Custom API, HTTP / REST
Abandoned Project Failed Company
Sonnerie
Time-Series
— Relational — Command-line / Shell, HTTP / REST
Time-Series
SpaceTime
2020 Relational — HTTP / REST, SQL
SpacetimeDB
OLTP AI-Assisted
2023 Relational Linux Custom API, HTTP / REST, SQL
OLTP AI-Assisted
Spark SQL
OLAP AI-Assisted
2014 — All OS with Java VM Custom API, SQL
OLAP AI-Assisted
SparrowDB
Abandoned Project
2016 Key/Value — HTTP / REST
Abandoned Project
Sphinx
Search Engine
2001 Document / XML AIX, BSD, Linux, macOS, Solaris, Windows —
Search Engine
SpiceDB
Middleware AI-Assisted
2021 Object-Oriented — Custom API, HTTP / REST
Middleware AI-Assisted
Splice Machine
Abandoned Project Failed Company
2012 — All OS with Java VM SQL
Abandoned Project Failed Company
SpreadsheetDB
Failed Company
2017 Document / XML Hosted HTTP / REST
Failed Company
StormiDB
NoSQL
2024 Document / XML — Custom API
NoSQL
Supabase
OLTP AI-Assisted Hosting Service
2020 — Hosted GraphQL, HTTP / REST, SQL
OLTP AI-Assisted Hosting Service
SurrealDB
Serverless Multi-Model AI-Assisted
2016 Document / XML, Graph, Relational Linux, macOS, Windows RPC, Custom API, HTTP / REST, SQL
Serverless Multi-Model AI-Assisted
SylvieJS
Web Browser
2023 Document / XML — Custom API
Web Browser
TaffyDB
Abandoned Project
2009 Document / XML — —
Abandoned Project
Tajo
OLAP Abandoned Project
2012 Relational All OS with Java VM Command-line / Shell, Custom API, SQL
OLAP Abandoned Project
Tamino
2000 Document / XML — —
Tantivy
Search Engine MMAP AI-Assisted
2016 Document / XML Linux Custom API
Search Engine MMAP AI-Assisted
Tanzu GemFire
Cache Acquired Company NoSQL
2002 Key/Value All OS with Java VM Command-line / Shell, Custom API, SQL
Cache Acquired Company NoSQL
TayzGrid
— Object-Oriented All OS with Java VM —
TDengine
Time-Series AI-Assisted
2017 Relational Linux, macOS, Windows Custom API, HTTP / REST, SQL, Command-line / Shell
Time-Series AI-Assisted
TDSQL
2012 Key/Value, Document / XML, Relational — HTTP / REST
Teradata
1979 Document / XML, Graph, Relational Linux —
TerminusDB
AI-Assisted
2019 Document / XML, Graph, Triplestore / RDF — Custom API, Datalog
AI-Assisted
Terrastore
Abandoned Project
2009 Document / XML — Custom API
Abandoned Project
ThreadDB
Abandoned Project Peer-to-Peer
2019 Document / XML Linux Custom API
Abandoned Project Peer-to-Peer
tiedot
Abandoned Project
2013 Document / XML — —
Abandoned Project
TigerGraph
2012 Graph Linux Custom API, HTTP / REST
Tile38
2016 — — Custom API, HTTP / REST
Timbala
Time-Series Abandoned Project
2016 Relational Linux HTTP / REST, PromQL
Time-Series Abandoned Project
TIMBER
— Document / XML — XQuery
TingoDB
Abandoned Project
2013 Document / XML — Custom API
Abandoned Project
TinyDB
2013 Document / XML — Custom API
tinySQL
xBase Abandoned Project
2003 Relational All OS with Java VM Command-line / Shell, SQL
xBase Abandoned Project
TokuMX
Forked Code Acquired Company Abandoned Project
2013 Document / XML Linux, macOS, Windows Custom API
Forked Code Acquired Company Abandoned Project
TopK
Nearest Neighbor Search Search Engine AI-Assisted
2024 Document / XML Hosted, Linux Custom API
Nearest Neighbor Search Search Engine AI-Assisted
ToroDB
Abandoned Project
— Document / XML — —
Abandoned Project
Trino
AI-Assisted
2019 — All OS with Java VM SQL
AI-Assisted
tsink
Time-Series
2025 — Linux HTTP / REST, PromQL
Time-Series
TukDB
Search Engine
2024 Document / XML Hosted Custom API
Search Engine
turbopuffer
Serverless Nearest Neighbor Search
2023 Vector Hosted HTTP / REST
Serverless Nearest Neighbor Search
TypeDB
AI-Assisted
2016 Entity-Relationship, Graph All OS with Java VM Custom API
AI-Assisted
Ultipa
OLAP OLTP NoSQL
2019 Graph Hosted, Linux Custom API, HTTP / REST
OLAP OLTP NoSQL
Unbounded
Failed Company
2020 Document / XML Hosted Custom API
Failed Company
UnisonDB
Multi-Model
2025 Column Family / Wide-Column, Key/Value Linux HTTP / REST
Multi-Model
UnQLite
OLTP NoSQL
— Document / XML, Key/Value — —
OLTP NoSQL
UnumDB
Abandoned Project Failed Company
2015 Document / XML, Graph, Key/Value, Array / Matrix Hosted, Linux —
Abandoned Project Failed Company
Vald
Nearest Neighbor Search Search Engine AI-Assisted
2019 Vector — Custom API, HTTP / REST
Nearest Neighbor Search Search Engine AI-Assisted
VanillaDB
Abandoned Project
2016 Multi-Value All OS with Java VM Custom API, SQL, Stored Procedures
Abandoned Project
Vearch
Nearest Neighbor Search Search Engine
2019 Document / XML, Vector Linux HTTP / REST
Nearest Neighbor Search Search Engine
vecdb
Nearest Neighbor Search Search Engine MMAP
2026 Document / XML, Vector Linux Command-line / Shell, SQL
Nearest Neighbor Search Search Engine MMAP
VectorDB
Abandoned Project Nearest Neighbor Search
2023 Document / XML, Vector Linux HTTP / REST
Abandoned Project Nearest Neighbor Search
VectorDB
Nearest Neighbor Search
2023 Document / XML, Vector — Custom API
Nearest Neighbor Search
Venice
AI-Assisted
2014 Document / XML All OS with Java VM Custom API
AI-Assisted
VertexDB
Abandoned Project
2009 Graph Linux, macOS HTTP / REST
Abandoned Project
Vespa
Search Engine AI-Assisted
1997 Document / XML Linux Custom API, SQL
Search Engine AI-Assisted
Virtuoso
1998 Relational — Custom API, SQL, HTTP / REST
ViyaDB
OLAP Abandoned Project
2017 Relational — HTTP / REST, SQL
OLAP Abandoned Project
vyhodb
Abandoned Project
2012 Network All OS with Java VM Custom API
Abandoned Project
WakandaDB
Failed Company
1996 Document / XML — —
Failed Company
Warp 10
Time-Series
2013 — All OS with Java VM Custom API
Time-Series
XAP
2000 Key/Value All OS with Java VM Custom API, SQL
Xapian
Search Engine
2001 Document / XML — Custom API
Search Engine
Xata
Forked Code AI-Assisted
2020 Relational Linux Command-line / Shell, HTTP / REST, SQL
Forked Code AI-Assisted
Xodus
2014 Document / XML — —
XTDB
AI-Assisted
2018 Document / XML — SQL, Datalog
AI-Assisted
Yanza
Time-Series Failed Company
2008 Document / XML Windows Custom API, HTTP / REST
Time-Series Failed Company
YaraDB
2025 Document / XML — Custom API, HTTP / REST
YARD-SQL
Failed Company
1996 Relational All OS with Java VM SQL
Failed Company
YDB
NewSQL OLTP AI-Assisted
2014 Relational Hosted, Linux, macOS RPC, HTTP / REST, SQL
NewSQL OLTP AI-Assisted
YouTrackDB
Forked Code AI-Assisted
2024 Graph All OS with Java VM Custom API, SQL, Gremlin
Forked Code AI-Assisted
ZeptoDB
Time-Series AI-Assisted
2026 — Linux Custom API, HTTP / REST, SQL
Time-Series AI-Assisted
ZeroDB
Abandoned Project
2015 Document / XML — Custom API
Abandoned Project
Zookeeper
2008 Hierarchical All OS with Java VM Command-line / Shell
Zu
Cache
2025 Key/Value Linux Command-line / Shell, HTTP / REST
Cache