Figure shows the computational flow to compute the several molecular properties and phenomena at one time. Different structures are saved as the different formatted checkpoint files. Currently supported input is a common sdf file of one molecule, which is widely used in chemoinformatics, Gaussian chk, and Gaussian fchk files. When an sdf file is used as input, the number of radical electrons and charge are counted by the tool of RDkit . 18 QCforever computes the ground state at the first step. For conformation search, QCforever should rely on the other software. It is possible to perform geometry optimization by option.