ptemcee, pronounced "tem-cee", is fork of Daniel Foreman-Mackey's emcee (ascl:1303.002) to implement parallel tempering more robustly. As far as possible, it is designed as a drop-in replacement for emcee. It is helpful for characterizing awkward, multi-modal probability distributions.
https://ui.adsabs.harvard.edu/abs/2016MNRAS.455.1919V and https://ui.adsabs.harvard.edu/abs/2013PASP..125..306F