Antares is a port of the original Ares code base that was open sourced in 2008. Antares is an extremely faithful reproduction of the original Ares experience, making changes only as necessary to support running on modern computers.
Antares has a project page and official repository on Google Code, as well as a mirror on GitHub. Bugs and feature requests should be submitted to its issue tracker.
The latest version of Antares is 0.5.1, released 02 November, 2011. It is licensed under the GNU Lesser General Public License 3.0.