KROME is a nice and friendly chemistry package
for a wide range of astrophysical simulations.
Given a chemical network (in CSV format) it automatically generates all the routines needed to solve the kinetic of the system, modelled as a system of coupled Ordinary Differential Equations. It provides different options which make it unique and very flexible.
Please use the KROME's users mailing list for any problem related to the package or if you have additional comments.
KROME is developed and maintained by Tommaso Grassi, Stefano Bovino, and many others.
KROME is an open-source package, GNU-licensed, and any improvements provided by the users is well accepted.