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MySQL, the most popular Open Source SQL database management system, is developed, distributed, and supported by Oracle Corporation.
PostgreSQL is a powerful, open source 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. It runs on all major operating systems, including Linux, UNIX (AIX ... [More]
hsqldb is a relational database engine written in Java with a JDBC driver that supports a subset of ANSI SQL:1999. It offers a small, fast database engine. Embedded and server modes are available. It includes tools such as a minimal Web server, in-memory query and management tools (which can be run ... [More]
Firebird is a relational database offering many ANSI/ISO SQL standard features that runs on Linux, Windows, and a variety of Unix platforms. Firebird offers excellent concurrency, high performance, and powerful language support for stored procedures and triggers. It has been used in production ... [More]
db4o is an object database available for Java and for .NET, including CompactFramework and Mono. Features include ACID transactions, automatic class schema recognition, Native Queries, query-by-example, S.O.D.A. object querying API, callback methods, memory files, cascade-on-delete and ... [More]
Apache Xindice is a database designed from the ground up to store XML data or what is more commonly referred to as a native XML database.
BlackRay is a relational database system designed to offer performance features commonly associated with search engines. It offers SQL support and sophisticated operational and management features. Load-balancing and operational stability by means of N+1 redundance are included. BlackRay is ... [More]
Sedna is an open source XML database management system. It is a XML-native system developed from scratch in C/C++ and Scheme. Sedna is a full-featured database system that supports queries, updates, ACID transactions, security, etc. Sedna is designed to be fast, reliable and easy-to-use for ... [More]
CUBRID is a comprehensive open source relational database management system highly optimized for Web Applications and written in C/C++. Includes JDBC, CSQL for command line administration, PHP & Ruby Libraries to connect to CUBRID.
ThinkSQL is a cross-platform RDBMS. Compliance with the SQL standard means it supports transactions, sub-selects, views, set operators, and referential constraints. It has a multi-versioning engine and native ODBC, JDBC and Python drivers.