The software provides an extensible framework that allows Java developers to interact with various data services, including databases, web services, Object XML mapping (OXM), and enterprise information systems (EIS).

[2] The original contribution was from TopLink's 11g code base, and the entire code-base/feature set was contributed, with only EJB 2 Container-Managed Persistence (CMP) and some minor Oracle Application Server specific integration removed.

This differs from the TopLink Essentials GlassFish contribution, which did not include some key enterprise features.

The TopLink Mapping Workbench user interface has also been contributed to the project.

EclipseLink is the intended path forward for persistence for Oracle and TopLink.