The FastJet package provides fast native implementations of many sequential recombination algorithms, including the longitudinally invariant kt longitudinally invariant inclusive Cambridge/Aachen and anti-kt jet finders. It also provides a uniform interface to external jet finders via a plugin mechanism. FastJet also includes tools for calculating jet areas and performing background (pileup/UE) subtraction and for jet substructure analyses.
https://ui.adsabs.harvard.edu/abs/2012EPJC...72.1896C and https://ui.adsabs.harvard.edu/abs/2006PhLB..641...57C