Database of Databases · The Encyclopedia of Database Systems

A curated reference guide for implementations of the world's most important type of software.

Browse All Leaderboards New in 2026

MIT Database Systems Massachusetts Institute of Technology The Tiny Databases Databases Named 'Tiny' Databases Listed on Wikipedia Systems That Have a Wikipedia Entry

Browse by Data Model

14 Models

Relational 442 Key/Value 236 Document / XML 209 Graph 81 Object-Oriented 61 Vector 36 Column Family / Wide-Column 28 Triplestore / RDF 26 Array / Matrix 21 Network 10 Multi-Value 5 Hierarchical 5 Entity-Relationship 4 Entity-Attribute-Value 2

Featured System

Updated Weekly

OrientDB

Key/Value Database System

OrientDB is a multi-model NoSQL DBMS that supports graph, documents, key-value, and object-oriented storage. Instead of just implementing another layer with an API, OrientDB integrates those models. …

Since 2010 Acquired Company Apache v2 Read entry

The Leaderboards

Updated Daily

Most Recent

Newly modified entries

Terrastore Document / XML today 02

Axion Relational today 03

Rya Triplestore / RDF today 04

Neug Graph 1d ago 05

GrapheneDB Graph 1d ago

Most Viewed

Last 30 days

SciDB Array / Matrix +5% 02

InterBase Relational -9% 03

BTDB Key/Value · Object-Oriented +10% 04

LMDB Key/Value +10% 05

BoltDB Key/Value -12%

Most Edited

Last 30 days

OpenSearch Document / XML 7 ✎ 02

SparrowDB Graph 6 ✎ 03

LMDB Key/Value 5 ✎ 04

VillageSQL Relational 5 ✎ 05

AriaSQL Relational 4 ✎