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  Analyzed 8 days ago

MySQL, the most popular Open Source SQL database management system, is developed, distributed, and supported by Oracle Corporation.

2.53M lines of code

188 current contributors

About 1 month since last commit

9,113 users on Open Hub

Very High Activity

PostgreSQL Database Server


  Analyzed 6 days ago

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, BSD, HP-UX, SGI IRIX, Mac OS X, Solaris,... [More]

798K lines of code

19 current contributors

6 days since last commit

2,045 users on Open Hub

Very High Activity



  Analyzed 6 days ago

SQLite is a small C library that implements a self-contained, embeddable, zero-configuration SQL database engine. Implements most of SQL92 and ACID (atomic, consistent, isolated, and durable) transactions; no setup or administration needed.

218K lines of code

4 current contributors

6 days since last commit

1,452 users on Open Hub

Very High Activity



  Analyzed 8 days ago

NHibernate is a port of Hibernate Core for Java to the .NET Framework. It handles persisting plain .NET objects to and from an underlying relational database. Given an XML description of your entities and relationships, NHibernate automatically generates SQL for loading and storing the objects. Optionally, you can describe your mapping... [More]

544K lines of code

27 current contributors

21 days since last commit

658 users on Open Hub

Moderate Activity



  Analyzed 6 days ago

The DBI module enables your Perl applications to access multiple database types transparently. You can connect to a large number of databases, including MySQL, MSSQL, Oracle, Informix, Sybase, ODBC etc. without having to know the different underlying interfaces of each. The API defined by DBI will work on all these database types and m... [More]

37.2K lines of code

7 current contributors

8 days since last commit

249 users on Open Hub

Low Activity
Licenses: Artistic-2.0, GPL-2.0+

HyperSQL Database Engine


  Analyzed 7 days ago

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 as applets or servlets, too), a test ... [More]

577K lines of code

2 current contributors

9 days since last commit

230 users on Open Hub

Moderate Activity



Claimed by OSGeo - The Open Source Geo... Analyzed 6 days ago

PostGIS is a spatial database extension for PostgreSQL. PostGIS complies with the OpenGIS "Simple Features for SQL" specification, and provides high-performance spatial SQL access to GIS objects in the database.

309K lines of code

6 current contributors

7 days since last commit

170 users on Open Hub

High Activity

Apache Derby


Claimed by Apache Software Foundation Analyzed 8 days ago

Apache Derby, an Apache DB subproject, is a relational database implemented entirely in Java. Some key advantages include a small footprint ( about 2 megabytes for the base engine and embedded JDBC driver) and being based on the Java, JDBC, and SQL standards. Derby provides an embedded JDBC driver that lets you embed Derby in any Ja... [More]

763K lines of code

8 current contributors

12 days since last commit

118 users on Open Hub

Low Activity



  Analyzed 8 days ago

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 systems, under a variety of names, since 1... [More]

1.31M lines of code

27 current contributors

13 days since last commit

108 users on Open Hub

Very High Activity

Calligra Suite


Claimed by KDE Analyzed 7 days ago

Calligra Suite is a free, integrated graphic art, work & management applications suite, made with Qt & KDE libraries, running on Linux Desktops, Windows, OS X and mobile phones. It includes: Words – for word processing Sheets – for spreadsheeting Stage – for doing presentations Kexi – for creating databases and applicati... [More]

4.2M lines of code

67 current contributors

10 days since last commit

102 users on Open Hub

Very High Activity
Licenses: GPL-2.0+, LGPL-2.1+