  "Hybrid Hadronization" is a new Monte Carlo package to hadronize systems of
partons. It smoothly combines quark recombination applicable when distances
between partons in phase space are small, and string fragmentation appropriate
for dilute parton systems, following the picture outlined by Han et al. [PRC
93, 045207 (2016)]. Hybrid Hadronization integrates with PYTHIA 8 and can be
applied to a variety of systems from $e^++e^-$ to $A+A$ collisions. It takes
systems of partons and their color flow information, for example from a Monte
Carlo parton shower generator, as input. In addition, if for $A+A$ collisions a
thermal background medium is provided, the package allows sampling thermal
partons that contribute to hadronization. Hybrid Hadronization is available for
use as a standalone code and is also part of JETSCAPE since the 2.0 release. In
these proceedings we review the physics concepts underlying Hybrid
Hadronization and demonstrate how users can use the code with various parton
shower Monte Carlos. We present calculations of hadron chemistry and
fragmentation functions in small and large systems when Hybrid Hadronization is
combined with parton shower Monte Carlos MATTER and LBT. In particular, we
discuss observable effects of the recombination of shower partons with thermal
partons.
