ObjectDB for JavaJDO Free Database Edition description
ObjectDB for Java/JDO - Powerful yet compact Object Database for Java/JDO written entirely in Java

ObjectDB for Java/JDO a compact yet powerful Object Database (ODBMS) for Java, compliant with the Java Data Objects (JDO) standard developed by Sun. It was written entirely in Java.

ObjectDB for Java/JDO is designed to handle efficiently databases of various sizes, ranged from a few KBs to hundreds of GBs.

Among its features are small footprint, high performance, rapid development, easy deployment and flexible architecture (1-Tier, 2-Tier or N-Tier).

ObjectDB free database edition is restricted to personal, non commercial use.