  In recent years three-, four- and five-loop beta functions have been computed
for various phenomenologically interesting models. However, most of these
results have not been implemented in easy to use software packages.
$\texttt{RGE++}$ bridges this gap by providing a flexible, template-based,
$\texttt{C++}$ library to solve renormalisation group equations. Furthermore,
we implement the available beta functions for the Standard Model, the minimal
supersymmetric extension of the Standard Model and two-Higgs-doublet models, as
well as right-handed neutrino extensions of the former two.
