While there are well-established computer simulation techniques to support the investigation of polymers, often the most technically difficult part of a polymer simulation workflow is actually generating models of the polymer(s) of interest. As a result, multiple computational platforms have been developed in recent years with the aim of making the generation of polymer models more straightforward. Several of these packages have been developed to allow users to build molecular models of polymers for use in molecular dynamics simulations. These packages generally require the user to provide a detailed description of the underlying chemistry of, and connectivity between, constituent monomers to output a topology of the desired polymer. Some allow the user to input forcefield information to be used in generating input files for classical molecular dynamics simulations. All of the referenced codes allow for the user to build homopolymers while some allow the user to build heteropolymers with different architectures and topologies. More recently, Polymer Structure Predictor (PSP) has reduced the amount of information required from the user to describe the chemistry of the monomers by allowing a SMILES string to be used as the input. The code can assign forcefield parameters from the CHARMM, AMBER and OPLS generalized forcefields and integrates with the LAMMPS classical simulation engine and the pysimm package for optimization of polymer structures. While the amount of the predefined information required to build the polymers is less in PSP than is required by other packages, the polymers that can currently be built are limited to homopolymers with either linear or cyclic topologies.