FactSage is a comprehensive thermochemical software and database package developed jointly by Thermfact/CRCT (Montreal, Canada) and GTT-Technologies (Aachen, Germany). It integrates thermochemical packages, resulting from over 20 years of collaborative efforts. It comprises a series of information, database, calculation, and manipulation modules that access various pure substances and solution databases. FactSage is utilized by numerous industrial, governmental, and academic users in fields such as materials science, pyrometallurgy, hydrometallurgy, electrometallurgy, corrosion, glass technology, combustion, ceramics, and geology. ...