How about Quantum Espresso [1] and CP2K [2]? They're both open source [1] https://www.quantum-espresso.org/ https://www.quantum-espresso.org/ [2] https://www.c

How about Quantum Espresso [1] and CP2K [2]? They're both open source [1] https://www.quantum-espresso.org/ https://www.quantum-espresso.org/ [2] https://www.cp2k.org/ https://www.cp2k.org/