PGJDBC-NG is an implementation of JDBC for the PostgreSQL server. It aims to support the complete JDBC 4.1. Specifically, it supports the advanced UDT features of JDBC which the mainstream driver lacks. It's implemented using an asynchronous I/O library (Netty), which allows it to support other advanced features like asynchronous notifications.

Changes:
This is the first alpha release for testing supported features. The only major features that have yet to be implemented are updatable ResultSets and CallableStatement. All other features should be handled fairly well

URL:
PGJDBC-NG – Freecode