This version was released 5 November 1999. In this file we document the new features that have been incorporated in version 1.6 of the software. This version was released 28 November 1997. Here you can find links to site where you can get GNU software, including make and gcc . Superior graphing package for all your Line diagrams, Histograms etc.
Most machines come with one of the two.
You can find lots of X Stuff here , xmgr itself can be found here VMD A molecular visualization program for displaying and animating large biomolecular systems using 3-D graphics. It can read a large number of file formats, including gro, trr and xtc. The graphical interface into the OpenMol set of computational chemistry programs. A molecular graphics program, that just displays your pdb-file on screen, you can then rotate do some colouring etc. Very convenient for a Quick look at a structure.