List of object-relational mapping software

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


Name Open source License Framework-specific Qt support boost support MySQL support PostgreSQL support SQLite support Oracle support MSSQL Server support ODBC support IBM DB2 support
LiteSQL Yes BSD no Yes Yes Yes Yes
ODB Yes GPL/other no Yes Yes Yes Yes Yes Yes Yes
QxOrm Yes GPL / commercial Qt, boost Yes Yes Yes Yes Yes Yes Yes Yes Yes


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




Object Pascal (Delphi)[edit]

  • 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[edit]

  • 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




  • 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 (MIT)
  • FuelPHP, ORM and framework for PHP 5.3, released under the MIT license. Based on the ActiveRecord pattern.
  • Laravel, framework that contains an ORM called "Eloquent" an ActiveRecord implementation.
  • Maghead, a database framework designed for PHP7 includes ORM, Sharding, DBAL, SQL Builder tools etc. free software, released under MIT license.
  • Moldable, ORM layer for PHP the automatically sync and update database schema, open source, MIT
  • Propel, ORM and query-toolkit for PHP 5, inspired by Apache Torque, free software, MIT
  • Qcodo, ORM and framework for PHP 5, open source
  • QCubed, A community driven fork of Qcodo
  • 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
  • Skipper, visualization tool and a code/schema generator for PHP ORM frameworks, commercial
  • 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.


  • Django, ORM included in Django framework, open source
  • South, open source, for doing data migrations and schema migrations in the Django (up to 1.6) ORM
  • 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
  • peewee, open source
  • ponyorm, open source
  • Odoo - Formerly known as OpenERP, It is an Open Source ERP in which ORM is included



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

Visual Basic 6.0[edit]


  • ActiveRecord, free Xojo implementation of ActiveRecord pattern
  • Storm, open-source ORM that does not require code generation

See also[edit]