Finally, we provide a program for minimization and rescoring VS results based on freely available AmberTools. 
AmberTools
Improving virtual screening results with MM/GBSA and MM/PBSA rescoring.Virtual screening (VS) based on molecular docking is one of the most useful methods in computer-aided drug design. 
MM/GBSA
Improving virtual screening results with MM/GBSA and MM/PBSA rescoring.Virtual screening (VS) based on molecular docking is one of the most useful methods in computer-aided drug design. 
MM/PBSA