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Also from Wiley, already reviewed in Ponto Triplo, and now for the spectroscopy community: spectroscopyNow.com. All about Atomic Spectroscopy, Infrared and Fourier Transform Infrared Spectroscopy, Magnetic Resonance Imaging and Nuclear Magnetic Resonance Spectroscopy, Mass Spectrometry, Raman Spectroscopy, Ultraviolet and Visible Spectroscopy, X-ray Fluorescence and X-ray Diffraction and Chemometrics can be found on this portal.
An excellent compilation of ready-to-use applications: 3D coordinates for chemical structures, calculation and 3D visualization of orbitals, VRML and GIFs of chemical structures, calculation and visualization of IR and Raman spectra, calculation of physicochemical properties and many others.