MPICH is a robust and flexible implementation of the MPI . MPI is often used with parallel or distributed computing projects. MPICH is a multi-platform, configurable system for MPI. It can acheive parallelism using networked machines or using mulitasking on a single machine.

MPICH is a freely available, portable implementation of MPI, a standard for message-passing for distributed-memory applications used in parallel computing. MPICH is Free Software and is available for most flavours of Unix (including Linux and Mac OS X) and Microsoft Windows. Moreover, MPICH is a developed program library.