This section discusses the integration of ddX with Psi4 70 , a software suite for performing a wide range of firstprinciple quantum-chemistry calculations. Currently the implicit solvation models of ddX can be used both to compute self-consistent ground states (e.g. HF or DFT methods) as well as subsequent linear response properties including excited states computations based on TDDFT. For more details on using ddX with Psi4 see the ddX section of the Psi4 user manual at .