List of object–relational mapping software

This is a list of well-known object–relational mapping software.

Java

• Apache Cayenne, open-source for Java
• Apache OpenJPA, open-source for Java
• DataNucleus, open-source JDO and JPA implementation (formerly known as JPOX)
• Ebean, open-source ORM framework
• EclipseLink, Eclipse persistence platform
• Enterprise JavaBeans (EJB)
• Enterprise Objects Framework, Mac OS X/Java, part of Apple WebObjects
• Hibernate, open-source ORM framework, widely used
• Java Data Objects (JDO)
• JOOQ Object Oriented Querying (jOOQ)
• Kodo, commercial implementation of both Java Data Objects and Java Persistence API
• TopLink by Oracle

iOS

• Core Data by Apple for Mac OS X and iOS

.NET

• Base One Foundation Component Library, free or commercial
• Dapper, open source
• Entity Framework, included in .NET Framework 3.5 SP1 and above
• iBATIS, free open source, maintained by ASF but now inactive.
• LINQ to SQL, included in .NET Framework 3.5
• NHibernate, open source

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

Perl

• DBIx::Class

PHP

• Laravel, framework that contains an ORM called "Eloquent" an ActiveRecord implementation.
• Doctrine, open source ORM for PHP, Free software (MIT)
• CakePHP, ORM and framework, open source (scalars, arrays, objects); based on database introspection, no class extending
• CodeIgniter, framework that includes an ActiveRecord implementation
• Yii, ORM and framework, released under the BSD license. Based on the ActiveRecord pattern
• FuelPHP, ORM and framework for PHP, released under the MIT license. Based on the ActiveRecord pattern.
• Laminas, framework that includes a table data gateway and row data gateway implementations
• Qcodo, ORM and framework, open source
• Redbean, ORM layer for PHP, for creating and maintaining tables on the fly, open source, BSD
• Skipper, visualization tool and a code/schema generator for PHP ORM frameworks, commercial

Python

• Django, ActiveRecord ORM included in Django framework, open source
• SQLAlchemy, open source, a Data Mapper ORM
• 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
• Odoo – Formerly known as OpenERP, It is an Open Source ERP in which ORM is included.

Ruby

• ActiveRecord
• DataMapper
• iBATIS (inactive)

Smalltalk

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

See also

• Comparison of object–relational mapping software