easy to use sepctrography software. allow to display spectrography curves, and to overlay severals curves. you can create firste or second derivatives from the curves, or place marks to identify peaks.
finals drawings can be saved as png or pdf files.
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).
Viewmol is a graphical front end for computational chemistry programs. It is able to graphically aid in the generation of molecular structures for computations and to visualize their results.