D. Steck's Alkali Line Data - very useful reference guide for Sodium, Cesium and Rubidium.
NIST Atomic Spectra Database
A. Stone's Wigner coefficient calculator - easily evaluate 3j, 6j and 9j symbols on your browser.
PotCalc - webbased code for evaluating long range dipole-dipole potentials provided by M. Weidemüller's group at Freiburg.
Supplier Quick Reference
Below is a small list of companies providing useful lab equipment - its not exhaustive and some cover more than one field, but hope you find this useful!Email me to add new companies...