Third Party Solver Integration means the development of interfaces for Third Party FEM-Solvers. We already implemented this successfully several times. Below you can find some examples:
MAGNETICS for NX is a complete FEM simulation-software package to solve electromagnetic analysis problems. The user is able to work in the usual environment, which is fully integrated in the Siemens NX™ software system and allows the designer and analyst to use the same software environment as he already does for structural-, flow-, thermal-, or motion-analysis as well as for CAD/CAM/PDM
PERMAS is a powerful FEM-Solver from INTES for solving complexe simulation tasks. With PERMAS you can solve statics, dynamics, temperature fields, fluid-structural coupling and nonlinear analyses.