Recent versions of StuffIt will extract
.xz archives, but they will not run on Mac OS X 10.4 Tiger. And using something like Fink, it should be possible to install
xz-utils on 10.4, so that
.xz archives can be extracted from the Terminal.
But is there any graphical application that will run on Mac OS X 10.4 Tiger, and which will extract
It's OK if this application supports extracting
.tar.xz archives in a single step, but not necessary, because if it extracts the
.tar.xz file to a
.tar file, even an older version of StuffIt can extract that.