This
Macaulay2 package provides an interface to
PHCpack, a general-purpose
polynomial system solver that uses homotopy continuation. The main method is a
numerical blackbox solver which is implemented for all Laurent systems. The package
also provides a fast mixed volume computation, the ability to filter solutions,
homotopy path tracking, and a numerical irreducible decomposition method. As the
size of many problems in applied algebraic geometry often surpasses the capabilities
of symbolic software, this package will be of interest to those working on problems
involving large polynomial systems.