crest

CREST was developed as a utility and driver program for the semiempirical quantum chemistry package xtb. The programs name originated as an abbreviation for Conformer–Rotamer Ensemble Sampling Tool as it was developed as a program for conformational sampling at the extended tight-binding level GFN-xTB. Since then several functionalities have been added to the code. In its current state, the program provides a variety of sampling procedures, for example for improved thermochemistry, or explicit solvation. (Summary from the program web page.)

The official web page: https://crest-lab.github.io/crest-docs/