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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]
Ingres Database is the open source database management system that can reduce IT costs and time to value while providing the strength and features expected from an enterprise class database. Ingres Database is a leader in supporting business critical applications and helping manage the most ... [More]
MonetDB is a open-source columnar database system for high-performance applications. It comes with a feature rich SQL interface, ready to perform analytical queries on large datasets with an unusual speed.
libdbo is a lightweight database abstraction layer and an associated collection of plug-ins for connecting to databases. Modelled in many respects after Perl's DBI or PHP's PDO, the focus of libdbo is on providing a consistent API rather than abstracting away the details of differing SQL ... [More]
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.