The Gausster (Gaussian Cluster) utility is a program that clusters candidate protein-ligand complexes using Gaussian underestimation and makes predictions based on the lowest-scoring conformation in each cluster. It takes outputs from ZDOCK along with the corresponding PDB files and produces four to fifteen ligand configurations representing low-energy cluster basins of the energy landscape.

Online viewer: In addition to analyzing input data and outputting it to a page for convenient download, the site features an online viewer using the Jmol applet with tools for easy visualization.

Reference: R.F. Marcia, J.C. Mitchell, and J. Ben Rosen (2007) Multi-funnel optimization using Gaussian underestimation. J. Glob. Opt. 39(1): 39-48, 2007