Silicate vapors play key roles in planetary evolution, especially dominating the earliest stages of rocky planet formation, with examples ranging from outgassed magma ocean atmospheres to condensation within stellar nebula. This project presents the open-source thermodynamic modeling software VapoRock, which combines the MELTS liquid model (as implemented by the open-source code ThermoEngine) with gas-species properties from comprehensive thermochemistry tables (e.g. NIST-JANAF; Lamoreaux and Hildenbrand, 1984; Lamoreaux, Hildenbrand, and Brewer, 1987). Using these models, VapoRock calculates gaseous species abundances in contact with magma, represented using the MELTS liquid model. This project extends the ThermoEngine software package to enable direct simulation magma-vapor systems, providing a new modeling tool for the planetary science and astronomy communities.