## Aperçu

Opt'n Path is a free software to construct and optimize reaction paths. Its originality lies in the 'chemical' way used for the path construction: reactants and products are described in terms of chemical groups. This makes Opt'n Path very efficient for the construction of the initial path, as well as for the path optimization towards the Minimum Energy Path.
To compute energies and forces along the reaction path, Opt'n Path is coupled to 'energetic engines' such as Gaussian, MOPAC2016, VASP, Siesta or TurboMole for example. One can also use any code using formatted files.