MOLSCAT
... is a code for quantum mechanical (coupled channel) solution of the nonreactive molecular scattering problem (USA) [E]
PiSystems XTE
The fastest, most reliable and at the same time most user-friendly quantum-chemical program for the calculation of electronic spectra and colours of organic molecules as well as for the support in synthetic science (CH) [D, E]
WATOC
The World Association of Theoretically Oriented Chemists (UK) [E]
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