This table shows some of the major ORM software products currently available.
| Software | Platform | Availability | License | Version |
|---|---|---|---|---|
| Autumn | Python | Open source | MIT License | 0.5.1 (2008-12-23[1]) |
| DataObjects.Net | .NET 4.0 | Commercial | 4.4 (2011-02-11[2]) | |
| DevExpress | .NET 4.0 | Commercial | 11.1.8 (2011-09-30)[3] | |
| ECO | .NET 4.0 | Commercial | ECO 6 Final (2011-04-18[4]) | |
| Hibernate | Java Virtual Machine | Open source | GNU Lesser General Public License | 3.6.2 Final / March 10, 2011 |
| iBATIS | Cross-platform | Open Source | Apache License 2.0 | |
| LLBLGen_Pro | .NET 4.0 | Commercial | 3.1 | |
| Microsoft ADO.NET Entity Framework | .NET 4.0 | Part of .NET 4.0 | v4.0 (2010-04-12) | |
| nHibernate | .NET 2.0 | Open source | GNU Lesser General Public License | 2.1.2.GA (2009-11-22[5]) |
| ODB | Cross-platform C++ | Dual-licensed | GNU General Public License and Proprietary License | 1.7.0 / December 7, 2011 |
| SQLAlchemy | Python | Open source | MIT License | 0.7.3 / October 16, 2011 |
| SQLObject | Python | |||
| Storm | Python | Open source | LGPL 2.1 | 0.19 / October 5, 2011 |
| SubSonic | .NET 2.0 | Open Source | New BSD | 3.0 / July 2009 |
| Telerik OpenAccess ORM | .NET 2.0+ | Free & Commercial | Q2'11 (2011-07-13[6]) | |
| TopLink | Java Virtual Machine | Commercial | Oracle License | 10g |
| WebORB Integration Server | .NET, Java, PHP | Commercial & Open source | WebORB for .NET and WebORB for Java = Proprietary License, WebORB for PHP = Mozilla Public License | WebORB for .NET v.4.2 (Oct 2010), WebORB for Java v.4.0 (Sep 2010), WebORB for PHP (Sep 2008) |