DRAGON is Monte Carlo generator based on the Blast Wave model for ultrarelativistic heavy ion collisions. It includes resonance production and decay. The fireball can be simulated also fragmented into droplets. They can be produced if matter undergoes the phase transition very quickly. The model has also included elliptic flow.

Description of the model:
B. Tomášik: Computer Physics Communication 180 (2009) 1462

pdf from arxiv
and new version update:

B. Tomášik: Computer Physics Communication 207 (2016) 545

with an Erratum

Software package can be downloaded here (update 1.5.2017)

REGGAE is a simple algorithm which generates random momenta of particles which satisfy the constraint of energy and momentum conservation. On input it must be given the total energy and momentum of the system, as well as the masses of all particles to be produced. The generated momenta fill the phase-space in a way that maximizes the entropy.

Description of the model:
M. Mereš, I. Melo, B. Tomášik, V. Balek, V. Černý: Computer Physics Communication 182 (2011) 2561-2566

pdf from arxiv

Software package can be downloaded here