Project is licensed under Apache License 2.0 (http://www.apache.org/licenses/LICENSE-2.0.txt)
The lastest release is version 2.4.1, released on June 26, 2014. The release is published to the Maven central repository.
Most commonly artifacts are accessed using Maven, via Maven 2 repositories.
New releases are done using Sonatype Maven repository, from which they are automatically copied (with an hour of delay) to the Central Maven repository.
Here are quick links to the central Maven repository for manual downloading: