Catalogs

• Jet Propulsion Laboratory (JPL): http://spec.jpl.nasa.gov/ftp/pub/catalog/catdir.html
• Cologne Database for Molecular Spectroscopy (CDMS): https://cdms.astro.uni-koeln.de/classic/entries/
• The NIST Atomic Spectra Database: http://physics.nist.gov/PhysRefData/ASD/
• The VASTEL Database
• The Collision Database of CASSIS V5.0
• The Collision Database