the-wizz clusters redshift estimates for any photometric unknown sample in a survey. The software is composed of two main parts: a pair finder and a pdf maker. The pair finder finds spatial pairs and stores the indices of all closer pairs around target reference objects in an output HDF5 data file. Users then query this data file using the indices of their unknown sample to produce an output clustering-z.
https://github.com/morriscb/The-wiZZ/ and https://ui.adsabs.harvard.edu/abs/2017MNRAS.467.3576M