Unarc unpacks an archive and creates a top-level directory to unpack into if it's needed. Unarc works with lots of archives, not just tarballs (bz2, zip, and even rpm are supported).
unarc is a property of unarc respective authors, vendors and developers. You can download unarc for your hardware. If you want to use unarc for other purpose, Please contact the authors, vendors and developers of unarc.