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Database of Databases

1,228 Systems Ranked

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Country of Origin
United States of America 579
China 96
Germany 78
United Kingdom 64
Canada 38
France 36
Russia 31
India 29
Netherlands 24
Japan 21
Data Model
RE Relational 477
KE Key-Value 251
DO Document / XML 218
GR Graph 93
OB Object-Oriented 64
VE Vector 54
TR Triplestore / RDF 28
CO Column Family / Wide-Column 28
AR Array / Matrix 22
NE Network 10
Query Interface
CU Custom API 491
SQ SQL 431
HT HTTP / REST 158
CO Command-line / Shell 69
ST Stored Procedures 28
CY Cypher 24
SP SPARQL 21
GR GraphQL 18
DA Datalog 16
PL PL/SQL 16
Compatibility
PostgreSQL PostgreSQL 54
MySQL MySQL 43
Redis Redis 35
MongoDB MongoDB 19
Prometheus Prometheus 9
Oracle Oracle 7
Memcached Memcached 7
Neo4j Neo4j 6
RocksDB RocksDB 6
Elasticsearch Elasticsearch 6
Derived From
PostgreSQL PostgreSQL 37
MySQL MySQL 25
Redis Redis 9
RocksDB RocksDB 7
ClickHouse ClickHouse 7
Cassandra Cassandra 5
Elasticsearch Elasticsearch 4
LMDB LMDB 4
Spark SQL Spark SQL 4
Cloud BigTable Cloud BigTable 3
Embeds / Uses
RocksDB RocksDB 35
SQLite SQLite 21
LMDB LMDB 17
PostgreSQL PostgreSQL 15
Berkeley DB Berkeley DB 12
LevelDB LevelDB 11
MySQL MySQL 11
FoundationDB FoundationDB 7
DataFusion DataFusion 7
Cassandra Cassandra 6
Hosted Offerings
MySQL MySQL 6
ClickHouse ClickHouse 5
PostgreSQL PostgreSQL 4
SQL Server SQL Server 3
Db2 Db2 2
Redis Redis 2
Neon Neon 2
Neo4j Neo4j 1
CouchDB CouchDB 1
DuckDB DuckDB 1
Source Code License
PR Proprietary 356
AP Apache v2 316
MI MIT License 170
BS BSD License 62
AG AGPL v3 53
GP GPL v2 48
GP GPL v3 36
MO Mozilla Public License 18
BU Business Source License 16
LG LGPL v2 15
Implementation Language
C+ C++ 237
JA Java 165
C C 151
GO Go 119
RU Rust 117
PY Python 55
C# C# 40
JA JavaScript 36
ER Erlang 14
SC Scala 13
Project Type
OP Open Source 794
CO Commercial 612
HO Hobby 184
AC Academic 92
IN Industrial Research 19
ED Educational 11
IN Internal / Non-Public 10
Developers
IBM Corporation IBM Corporation 17
Google LLC Google LLC 16
Amazon.com, Inc. Amazon.com, Inc. 13
University of California, Berkeley University of California, Berkeley 11
Microsoft Corporation Microsoft Corporation 11
Meta Platforms Inc Meta Platforms Inc 11
Massachusetts Institute of Technology Massachusetts Institute of Technology 10
Oracle Corporation Oracle Corporation 9
SAP SE SAP SE 8
LinkedIn Corporation LinkedIn Corporation 8
Acquisitions
Oracle Corporation Oracle Corporation 10
IBM Corporation IBM Corporation 8
SAP SE SAP SE 7
Rocket Software, Inc. Rocket Software, Inc. 7
Teradata Corporation Teradata Corporation 4
Actian Corporation Actian Corporation 4
Sybase Inc. Sybase Inc. 3
Microsoft Corporation Microsoft Corporation 3
Cisco Cisco 3
Amazon.com, Inc. Amazon.com, Inc. 3