WzBinned extracts binned and uncorrelated estimates of dark energy equation of state w(z) using Type Ia supernovae Hubble diagram and other cosmological probes and priors. It can handle an arbitrary number of input distance modulus data (entered as an input file SNdata.dat) and various existing cosmological information.
https://ui.adsabs.harvard.edu/abs/2007JCAP...09..004S and https://ui.adsabs.harvard.edu/abs/2008PhRvL.100x1302S