  FlexibleSUSY is a software package for various calculations in any model of
physics beyond the standard model (not just any supersymmetric model).
FlexibleSUSY can solve boundary value problems and uses this to find
$\overline{DR}/\overline{MS}$ parameters and calculate the Higgs and BSM
particle masses, as well as other observables. FlexibleSUSY is designed to be
adaptable, fast, precise and reliable. We describe FlexibleSUSY with particular
emphasis on recent developments and the state of the art Higgs mass
calculations it can perform. We also show some applications to illustrate how
it can be used to obtain interesting physics results with the highest precision
possible and with remarkable speed.
