Exciton approach for surface hopping (EXASH) is a fragment-based method, where electronic properties at each timestep are derived, permuting each chromophore in the field of the others. It is set to work with semiempirical FOMO-CI and MM fields to describe systems composed of many chromophores, using an excitonic approach. In Newton-X NS, EXASH is also implemented for TDDFT/MM.