GOAP is a generalized orientation-dependent, all-atom statistical potential for protein structure prediction. It was benchmarked against other state-the-art similar potentials and was shown to be significantly better for discriminating native structures from decoys.
Reference: H. Zhou and J. Skolnick: GOAP: A generalized orientation-dependent, all-atom statistical potential for protein structure prediction, Biophysical Journal, 101(8):2043-2052, 2011 PDF
This software is freely available to ALL users.
GOAP linux_64 executable including source code for prediction
Click here to download (41M .zip file, use unzip to unpack).