Many programs, whether existing or still in the planning stage, would benefit or even need to rely on the ability the calculate chemical equilibria. Since developing such an equilibrium code, even for modest chemical systems and simple mixture phase models, is a daunting task, the need for a specialised, reliable, third-party supported code became obvious. As no such tool was available, ChemApp was developed within the framework of a European “Science” program. Since the beginning of 1996, ChemApp is available for a wide range of platforms.
