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

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

Redis

Redis (REmote DIctionary Server) is an open-source, networked, in-memory, key-value data store with optional durability. It is often referred to as a data structure server since keys can contain strings, hashes, lists, sets and sorted sets.

Free Open Source Mac OS X Windows Linux BSD Self-Hosted

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

Oracle Database

Oracle Database delivers industry leading performance, scalability, security and reliability on a choice of clustered or single-servers running Windows, Linux, and UNIX.

Commercial Mac OS X Windows Linux

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

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

Apache HBase

HBase is an open source, non-relational, distributed database modeled after Google's BigTable and is written in Java. It is developed as part of Apache Software...

Free Open Source Linux Web

Cosmos DB

Azure DocumentDB is a NoSQL document database service designed from the ground up to natively support JSON and JavaScript directly inside the database engine. It’s the...

Commercial Web

NosDB

NosDB is a 100% native .NET Open Source NoSQL Database (released under the Apache 2.0 License). NosDB is extremely fast and linearly scalable and allows your .NET...

Free Open Source Windows

Amazon DynamoDB

Amazon DynamoDB is a fully managed NoSQL database service offered by Amazon.com as part of the Amazon Web Services portfolio. It was announced by Amazon CTO Werner...

Commercial Web

Titan Database

Titan is a scalable graph database optimized for storing and querying graphs containing hundreds of billions of vertices and edges distributed across a multi-machine...

Free Open Source Mac OS X Windows Linux

Amazon Redshift

Amazon Redshift is a fast, fully managed, petabyte-scale data warehouse solution that makes it simple and cost-effective to efficiently analyze all your data using your...

Commercial Web

DeepDB

DeepDB is a new general purpose database for #BigData and the #Cloud that performs simultaneous transactions and analytics … in real-time, on the same data set.

Commercial Linux

Action PSQL

Actian PSQL combines a NoSQL transactional engine and a SQL relational engine to deliver a zero-DBA database platform for business applications.

Commercial Windows