ACE (Atmospheric Chemical Equilibrium) computes the chemical equilibrium composition for a given elemental composition and pressure-temperature profile. The code, written in Fortran, computes the chemical equilibrium composition in atmospheres of AGB stars, brown dwarfs, and exoplanets.

PACT (Planetary Atmosphere Chemistry and Temperature) couples thermal structure and chemistry in the vertical (1D) direction to model planetary and exoplanet atmospheres. It computes radiative–convective temperature profiles while integrating a non‑equilibrium chemical network that includes kinetics, photochemical processes, and vertical mixing, yielding altitude‑dependent abundances for many gas‑phase species. Given planetary and atmospheric parameters and a chemical network, the code returns self‑consistent vertical profiles of temperature and composition for further analysis.