Atomic Data and Spectroscopy.
- NIST Atomic Spectra Database
- GENIE Atomic Data Search Engine
- ALADDIN database
- Kelly Atomic Line Database
- LANL Atomic Physics Codes
- Flexible Atomic Code (FAC)
- R.D. Cowan atomic structure package
- FLYCHK
- LANL TOPS Opacities
- Opacity Project