http://www.mat.univie.ac.at/~gerald/ftp/xtexsh/
There are tar.gz, noarch.rpm versions available. All rpms are signed with my DSS key.
Note however, that the program itself is a script, i.e, a plain text file which is interpreted by wish. Hence it is independent of the platform you are using (as long as it is some flavor of Unix).
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
Please see the included file LICENSE for a copy of the GNU General Public License. If this file is missing, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.