Ascalaph Designer is a computer program for general purpose molecular modelling for molecular design and simulations.

It provides a graphical environment for the common programs of quantum and classical molecular modelling ORCA, NWChem, Firefly, CP2K and MDynaMix[1] .

[2] The molecular mechanics calculations cover model building, energy optimizations and molecular dynamics.

Firefly (formerly named PC GAMESS)[3][4][5] covers a wide range of quantum chemistry methods.

Ascalaph Designer is free and open-source software, released under the GNU General Public License, version 2 (GPLv2).