MySQL Community Edition

MySQL Community Edition is a freely downloadable version of the world's most popular open source database that is supported by an active community of open source developers and enthusiasts.

Free Open Source Mac OS X Windows Linux BSD

SQLite

SQLite is a software library that implements a self-contained, serverless, zero-configuration, transactional SQL database engine. SQLite is the most widely deployed SQL database engine in the world.

Free Open Source Mac OS X Windows Linux Android iPhone Self-Hosted

PostgreSQL

PostgreSQL is a powerful, open source object-relational database system. It has more than 15 years of active development and a proven architecture that has earned it a strong reputation for reliability, data integrity, and correctness.

Free Open Source Mac OS X Windows Linux BSD

MongoDB

MongoDB (from "humongous") is a scalable, high-performance, open source NoSQL database. The database is document-oriented so it manages collections of JSON-like documents.

Free Open Source Mac OS X Windows Linux BSD Web

MariaDB

MariaDB is a backward compatible, drop-in replacement of the MySQL® Database Server. It includes all major open source storage engines. The source code for MariaDB is publically available from Launchpad.

Free Open Source Windows Linux BSD

Microsoft SQL Server

SQL Server delivers on Microsoft’s Data Platform vision by helping your organization manage your data by enabling you to store data from structured, semi-structured, and unstructured documents within the database.

Freemium Windows

CouchDB

Apache CouchDB is a distributed, fault-tolerant and schema-free document-oriented database accessible via a RESTful HTTP / JSON API.

Free Open Source Mac OS X Windows Linux Android BSD

Valentina Server

Valentina Server is 3 in 1: * Valentina DB Server * Valentina SQLite Server * Valentina Report Server .

Freemium Mac OS X Windows Linux Raspberry Pi

RethinkDB

RethinkDB pushes JSON to your apps in realtime. When your app polls for data, it becomes slow, unscalable, and cumbersome to maintain.

Free Open Source Mac OS X Windows Linux BSD

Firebird

Firebird is a relational database offering many ANSI SQL-92 features that runs on Linux, Windows, and a variety of Unix platforms.

Free Open Source Mac OS X Windows Linux

H2 Database Engine

H2 is a relational database management system written in Java. It can be embedded in Java applications or run in the client-server mode. The disk footprint (size of the jar file) is about 1 MB.

Free Open Source Mac OS X Windows Linux

CouchBase

Couchbase is the NoSQL database market share leader, with production deployments at AOL, Deutsche Post, NTT Docomo, Salesforce.com, Turner Broadcasting Systems, Zynga and hundreds of other organizations worldwide.

Free Open Source Mac OS X Windows Linux

CockroachDB

Cockroach is a distributed key/value datastore which supports ACID transactional semantics and versioned values as first-class features. The primary design goal is...

Free Open Source Mac OS X Linux BSD

HSQLDB

HSQLDB (Hyper Structured Query Language Database) is a relational database management system written in Java. It has a JDBC driver and supports a large subset of SQL-92...

Free Open Source Mac OS X Windows Linux

Alpha Five

Alpha Five is a relational database management system and Rapid Application Development system (RAD) for building Windows desktop and Web (including AJAX)...

Commercial Windows

Mimer SQL

Mimer SQL is an SQL-based relational database management system from the Swedish company Mimer Information Technology AB (formerly: Upright Database Technology AB)...

Commercial Mac OS X Windows Linux Android Windows Mobile

IBM Lotus Approach

Lotus Approach is the award-winning relational database designed to manage, analyze and report on business information. It offers breakthrough ease of use, unprecedented...

Commercial Windows

mSQL

Mini SQL, or mSQL, is a lightweight database engine designed to provide fast access to stored data with low memory requirements. As its name implies, mSQL offers a...

Free Personal Mac OS X Windows Linux

SAP MaxDB

MaxDB is an ANSI SQL-92 (entry level) compliant relational database management system (RDBMS) from SAP AG, which was delivered also by MySQL AB from 2003 to 2007. MaxDB...

Free Mac OS X Windows Linux