  FreeFem++ is an open source platform to solve partial differential equations
numerically, based on finite element methods. It was developed at the
Laboratoire Jacques-Louis Lions, Universit\'e Pierre et Marie Curie, Paris by
Fr\'ed\'eric Hecht in collaboration with Olivier Pironneau, Jacques Morice,
Antoine Le Hyaric and Kohji Ohtsuka. The FreeFem++ platform has been developed
to facilitate teaching and basic research through prototyping. FreeFem++ has an
advanced automatic mesh generator, capable of a posteriori mesh adaptation; it
has a general purpose elliptic solver interfaced with fast algorithms such as
the multi-frontal method UMFPACK, SuperLU . Hyperbolic and parabolic problems
are solved by iterative algorithms prescribed by the user with the high level
language of FreeFem++. It has several triangular finite elements, including
discontinuous elements. For the moment this platform is restricted to the
numerical simulations of problems which admit a variational formulation. We
will give in the sequel an introduction to FreeFem++ which include the basic of
this software. You may find more information throw this link
http://www.freefem.org/ff++.
