# What is Pgpool-II? Pgpool-II is a tool to add useful features to PostgreSQL, including:
* connection pooling * load balancing * automatic fail over and more. # Minor releases Pgpool Global Development Group is pleased to announce the availability of following versions of Pgpool-II: * 4.1.5 * 4.0.12 * 3.7.17 * 3.6.24 * 3.5.28 Release notes for versions prior 3.6 are no longer included in the source code. Please take a look at [release notes](https://www.pgpool.net/docs/latest/en/html/release.html). You can download [the source code and RPMs](https://pgpool.net/mediawiki/index.php/Downloads).
