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[3893 users on Ohloh]
MySQL, the most popular Open Source SQL database management system, is developed, distributed, and supported by Sun Microsystems.
[2533 users on Ohloh]
OpenOffice.org is a multiplatform and multilingual office suite and an open-source project. Compatible with all other major office suites, the product is free to download, use, and distribute.
[1923 users on Ohloh]
phpMyAdmin is a tool written in PHP intended to handle the administration of MySQL over the Web. Currently it can create and drop databases, create/drop/alter tables, delete/edit/add fields, execute any SQL statement, manage keys on fields.
[1814 users on Ohloh]
TortoiseSVN is a very easy to use SCM / source control software for Microsoft Windows. It is implemented as a Windows shell extension, which makes it integrate seamlessly into the Windows explorer. Since it's not an integration for a specific IDE you can use it with whatever development tools you like.
PostgreSQL Database Server
[1046 users on Ohloh]
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, Tru64), and Windows.
[696 users on Ohloh]
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.
[558 users on Ohloh]
Hibernate is a powerful, high performance object/relational persistence and query service for Java. It lets you develop persistent objects following common Java idiom, including composition, association, inheritance, polymorphism, and the Java collections framework. To allow a rapid build procedure, Hibernate rejects the use of code generation or bytecode processing. Instead, runtime reflection is used and SQL generation occurs at system startup time. It supports Oracle, DB2, MySQL, PostgreSQL, ...
[406 users on Ohloh]
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 metadata with attributes in your source code.
[180 users on Ohloh]
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 many more.
HSQL Database Engine
[173 users on Ohloh]
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 framework, PHP compatibility, Eclipse and NetBeans IDE compatibility, and a number of demonstration examples.
[136 users on Ohloh]
SQLAlchemy is the Python SQL toolkit and Object Relational Mapper that gives application developers the full power and flexibility of SQL.

It provides a full suite of well known enterprise-level persistence patterns, designed for efficient and high-performing database access, adapted into a simple and Pythonic domain language.

SQL databases behave less and less like object collections the more size and performance start to matter; object collections behave less and less like tables a...

pgAdmin III
[126 users on Ohloh]
Open Source administration and management tools for the PostgreSQL database and derivative products such as EnterpriseDB, Pervasive Postgres and SRA PowerGres. Includes a graphical administration interface, an SQL query tool with grahical EXPLAIN, a procedural code editor, an SQL/shell/batch scheduling agent, Slony-I management and much more. pgAdmin III is designed to answer the needs of most users, from writing simple SQL queries to developing complex databases. The graphical interface support...
[99 users on Ohloh]
Ehcache is a widely used java distributed cache for general purpose caching, J2EE and light-weight containers.

It features memory and disk stores, replicate by copy and invalidate, listeners, a gzip caching servlet filter and much more...

Ehcache is available under an Apache open source license and is actively developed, maintained and supported.

[83 users on Ohloh]
Tags: spatial database opengis sql gis
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.
[78 users on Ohloh]
Tags: pdo php pecl database
PDO provides a uniform data access interface, sporting advanced features such
as prepared statements and bound parameters. PDO drivers are dynamically
loadable and may be developed independently from the core, but still accessed
using the same API.
Read the documentation at http://www.php.net/pdo for more information.
[78 users on Ohloh]
KOffice is a free, integrated office suite for KDE, the K Desktop Environment. KOffice applications uses OpenDocument as their native file format when possible. The suite is released separately from KDE.

The KOffice suite includes the following applications:
- KWord - A frame-based word processor
- KSpread - A powerful spreadsheet application
- KPresenter - A full-featured presentation program
- Kexi - An environment for creating data...

Apache Derby
[75 users on Ohloh]
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 Java-based solution. It also supports the more familiar client/server mode with the Derby Network Client JDBC driver and Derby Network Server. Derby is easy to in...

[73 users on Ohloh]
Propel is an object persistence and query service -- which means that Propel provides a system for storing objects to a database and a system for searching for and restoring the objects from the database. Propel enables you to perform complex queries and database manipulations without writing a single SQL clause.
[67 users on Ohloh]
Doctrine is an ORM (object relational mapper) for PHP that sits on top of a powerful DBAL (database abstraction layer). One of its key features is the ability to optionally write database queries in an OO (object oriented) SQL-dialect called DQL inspired by Hibernates HQL. This provides developers with a powerful alternative to SQL that maintains a maximum of flexibility without requiring needless code duplication.
[67 users on Ohloh]
JasperReports is a Java reporting library. XML report templates are used to generate ready to print documents using data from customizable data sources, including JDBC. The output can be delivered to the screen, printer, or stored in PDF, HTML, XLS, RTF, ODT, CSV, TXT and XML format.