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FFParam visualization tab displaying a molecule FFParam is a Standalone python package for CHARMM force field parametrization including both the additive CGenFF/CHARMM36 and Classical Drude polarizable force fields. To assist in the parametrization process, the program is provided with a graphical user interface (GUI) and it is cross-platform. FFParam shields the user from labor-intensive manual work and shifts the focus towards the improvement and the quality of parameters.

Users who are new to parametrization are advised to consult both FFParam manual & article as well as CGenFF articles.