Quantum Espresso is an integrated suite of Open-Source computer codes for electronic-structure calculations and materials modeling at the nanoscale. It is based on density-functional theory, plane waves, and pseudopotentials. Quantum-esprsso（第一性原理密度
PWgui是Quantum Espresso的图形界面。 PWgui is a GUI for PWscf based programs from Quantum-ESPRESSO integrated suite of codes for electronic structure calculations and materials modeling at the nanoscale. The following PWscf modules are supported by the GUI:
