-gc
	URLs: http://reality.sgi.com/boehm/gc.html
	      http://www.hpl.hp.com/personal/Hans_Boehm/gc/
	      http://www.hpl.hp.com/personal/Hans_Boehm/gc/gc_source/gc6.0.tar.gz
	Version: 6.0

- gmp
	URLs: http://www.gnu.org/directory/gnump.html
          http://www.swox.com/gmp/
	      http://ftp.gnu.org/gnu/gmp/gmp-4.1.2.tar.gz
	Version: 4.1.2

- gnuplot
	URLs: http://www.gnuplot.info/
	      ftp://ftp.gnuplot.info/pub/gnuplot/gnuplot-3.7.2.tar.gz
	      ftp://ftp.ucc.ie/pub/gnuplot/gnuplot-3.7.2.tar.gz
	Version: 3.7.2

- pari
	URLs: http://pari.math.u-bordeaux.fr/
	      http://pari.math.u-bordeaux.fr/pub/pari/unix/pari-2.1.3.tgz
	      ftp://pari.math.u-bordeaux.fr/pub/pari/unix/pari-2.1.3.tgz
	Version: 2.1.3

- PHC Pack
	URLs: http://www.math.uic.edu/~jan/
	      http://www.math.uic.edu/~jan/PHCv2p.tar.gz
	Version: 2

- TiGERS
	URLs: not available currently