CHEMKIN is a proprietary software tool for solving complex chemical kinetics problems. It is used worldwide in the combustion, chemical processing, microelectronics[citation needed] and automotive[citation needed] industries, and also in atmospheric science. It was originally developed at Sandia National Laboratories and is now developed by a US company, Reaction Design.
Reaction Design was acquired by ANSYS in 2014 so Chemkin and related products are now available through ANSYS.