[2] "Mpsolve takes advantage of sparsity, and has special hooks for polynomials that can be evaluated efficiently by straight-line programs"[3] The program is written mostly in ANSI C and makes use of the GNU Multi-Precision Library.
The executable program of the package is called mpsolve.
They behave similarly to the function roots that is already included in these software packages.
It may also be saved as a text file (with res extension) and plotted in gnuplot.
Direct plotting in gnuplot is also supported on Unix systems.