General features include staggered solution procedures, multiple domain concept, full restart support from any saved state, and built in support for parallel processing. Both sparse matrix storage schemes and corrresponding iterative and direct solvers are available.
Its structural module includes many analysis procedures including serial and parallel nonlinear static analyses with direct and indirect control and parallel nonlinear explicit dynamics. Its transport module can solve linear and non-linear stationary and transient heat transfer and coupled heat and mass transfer problems. Its large material library includes models for nonlinear fracture mechanics and rich element libraries are provided. OOFEM interfaces to IML++ (qv), PETSc(qv), and VTK (QV).