All releases of OpenWayback are available from Maven Central
The latest stable release can be found here OpenWayback 2.1.0.RC.1
The on-going development of Wayback was handed over to the International Internet Preservation Consortium (IIPC) in October 2013. For more details please see General overview. The releases of the Open Source Wayback Machine (OSWM) made by the Internet Archive can be found at Sourceforge Downloads page.
Full Release notes are available for releases beyond 1.2.0.
The latest builds can be found under SonaTypes snapshot repository Be aware that this distribution has been made from HEAD and HEAD builds are not guaranteed stable.