  We devise automated workflows for the calculation of Helmholtz and Gibbs free
energies and their temperature and pressure dependence and provide the
corresponding computational tools. We employ non-equilibrium thermodynamics for
evaluating the free energy of solid and liquid phases at a given temperature
and reversible scaling for computing free energies over a wide range of
temperatures, including the direct integration of $P$-$T$ coexistence lines. By
changing the chemistry and the interatomic potential, alchemical and upscaling
free energy calculations are possible. Several examples illustrate the accuracy
and efficiency of our implementation.
