GaussSum is a GUI application that can analyse the output of ADF, GAMESS (US), GAMESS-UK, Gaussian, and PC GAMESS to extract and calculate useful information. This includes the progress of the SCF cycles, geometry optimisation, UV-Vis/IR/Raman spectra, MO levels, MO contributions and more.GaussSum can also extract molecular oribtal information or information on the UV-VIS transitions.Here are some key features of \"GaussSum\":