List of object-relational mapping software

This is a list of well-known object-relational mapping software. It is not up-to-date or all-inclusive.

C++

Flex

• Athena Framework, open source Flex ORM, native support for multitenancy

Java

• ActiveJDBC - Java implementation of Active Record pattern, inspired by Ruby on Rails
• Cayenne, Apache, open source for Java
• Kodo, commercial implementation of both Java Data Objects and Java Persistence API
• Torque, an object-relational mapper for Java
• Athena Framework, open source Java ORM, native support for multitenancy SaaS and remoting to Adobe Flex
• Carbonado, open source framework, backed by Berkeley DB or JDBC
• Ebean, open source ORM framework
• EclipseLink, Eclipse persistence platform
• Enterprise Objects Framework, Mac OS X/Java, part of Apple WebObjects
• Hibernate, open source ORM framework, widely used
• MyBatis, formerly named iBATIS, has .NET port
• iBATIS, maintained by ASF, inactive as of 2010
• Java Data Objects (JDO)
• Java Object Oriented Querying (jOOQ)
• Java Persistence API (JPA)
• DataNucleus, open source JDO and JPA implementation
• JPOX, open source JDO 2 reference implementation
• Object Relational Bridge (Apache OJB), an object-relational mapper for Java; as of 2011/01/16, Apache ObJectRelationalBridge was retired
• OpenJPA, Apache, open source, supports JPA API
• ORMLite, lightweight open source framework supporting JDBC and Android
• TopLink by Oracle
• QuickDB ORM, open source ORM framework (GNU LGPL)
• ObjectDB
• EJB, Enterprise Java Beans
• MollyPages, MollyPages DBO ORM framework

MonoTouch / iOS

• DatabaseObjects .NET, open source

.NET

• ADO.NET Entity Framework, included in .NET Framework 3.5 SP1 and above
• Base One Foundation Component Library, free or commercial
• Business Logic Toolkit, open source
• Devart LinqConnect, commercial, an ORM solution for Oracle, MySQL, PostgreSQL, and SQLite
• Castle ActiveRecord, ActiveRecord for .NET, open source
• DatabaseObjects .NET, open source
• DataObjects.NET, commercial
• Dapper, open source
• ECO, commercial but free use for up to 12 classes
• EntitySpaces, commercial
• MyBatis, free open source, formerly named iBATIS
• iBATIS, free open source, maintained by ASF but now inactive.
• LINQ to SQL, included in .NET Framework 3.5
• LLBLGen Pro, commercial
• Neo, open source but now inactive.
• NHibernate, open source
• nHydrate, open source
• OpenAccess ORM, by Telerik free or commercial
• Persistor.NET, free or commercial
• Quick Objects, free or commercial
• Signum Framework, open source
• SubSonic, open source

Object Pascal (Delphi)

• Bold for Delphi Probably the most mature framework for Delphi, but not available due to Embarcadero Helped.
• ECO by Capable Objects, available for Delphi 2007 and Delphi Prism 2010

Objective-C, Cocoa

• Enterprise Objects, one of the first commercial OR mappers, available as part of WebObjects
• Core Data, object graph management framework with several persistent stores, ships with Mac OS X and iOS
• TMS AureliusORM, framework for Delphi with full support for data manipulation, complex and advanced queries, inheritance, polymorphism.
• DORM, Delphi implementation of Data Mapper Enterprise Design Pattern.

Perl

• DBIx::Class

PHP

• CakePHP, ORM and framework for PHP 5, open source (scalars, arrays, objects); based on database introspection, no class extending
• CodeIgniter, framework that includes an ActiveRecord implementation
• Doctrine, open source ORM for PHP 5.2.3, 5.3.X. Free software (GNU LGPL)
• FuelPHP, ORM and framework for PHP 5.3, released under the MIT license. Based on the ActiveRecord pattern.
• PdoMap, open source ORM for PHP 5.x, inspired by Hibernate, free software (GNU LGPL)
• Propel, ORM and query-toolkit for PHP 5, inspired by Apache Torque, free software, MIT
• Qcodo, ORM and framework for PHP 5, open source
• Rocks, open source ORM for PHP 5.1 plus, free for non-commercial use, GPL
• Redbean, ORM layer for PHP 5, creates and maintains tables on the fly, open source, BSD
• Torpor, open source ORM for PHP 5.1 plus, free software, MIT, database and OS agnostic
• Yii, ORM and framework for PHP 5, released under the BSD license. Based on the ActiveRecord pattern.
• Zend Framework, framework that includes a table data gateway and row data gateway implementations.

Python

• Django, ORM included in Django framework, open source
• SQLAlchemy, open source
• SQLObject, open source
• Storm, open source (LGPL 2.1) developed at Canonical Ltd.
• Tryton, open source
• web2py, the facilities of an ORM are handled by the DAL in web2py, open source

Ruby

• ActiveRecord, part of Ruby on Rails, open source
• Datamapper
• iBATIS, free open source

Smalltalk

• TOPLink/Smalltalk, by Oracle, the Smalltalk predecessor of the Java version of TOPLink

Visual Basic 6.0

• DatabaseObjects, open source

See also

• Comparison of object-relational mapping software

References