DataNucleus


Access Platform is our baseline product. It is the most standards-compliant Open Source Java persistence product in existence. It is fully compliant with the JDO1, JDO2, JDO2.1, JDO2.2, JDO3, JDO3.1, JPA1, JPA2, JPA2.1 Java standards. It also complies with the OGC Simple Feature Specification for persistence of geospatial Java types to RDBMS. It utilises an OSGi-based plugin mechanism meaning that it is extremely extensible. It is also free for use. The benefits for your business are significant.
All currently developed versions support JDO3.x and JPA2.1.
Version 3.3 [Read More] | [Download] | [Get Started] | [License] | [PDF Docs]
Version 4.0 [Read More] | [Download] | [Get Started] | [License] | [PDF Docs]

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Please note that as well as being freely available open source software, DataNucleus also accepts contributions to make it better still. You can contribute in many many ways, so why not start today?