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PyVib2 is a program for analyzing vibrational motion and vibrational spectra. It is an open source "all-in-one" solution for scientists working in the field of vibrational spectroscopy (Raman and IR) and vibrational optical activity (ROA and VCD).
pyVib is a Python-based molecular graphics visualizer. It allows visualizing vibrational modes (from latest gaussian fchk files), the related IR/VCD/Raman/ROA spectra, the GCM's (group coupling matrices) and ACP's (atomic contribution patterns).