I want to generate topology file for protein ligand complex to be used with Gromos96 force field. I want a reliable software or website (Except PRODRG 2.5) that can help me achieve the solution.
ATB is a pretty good server, but always evaluate the parameters you get from any automated process. GROMOS parametrization relies on empirical assignment of parameters, and groups are very transferable, so generally any irregularities are easy to spot.