(From MMikami 021002, updated 041022)

"Atomic Reference Data for electronic structure calculations"
by Svetlana Kotochigova, Zachary Levine, Eric Shirley, Mark Stiles
and Charles Clarck
    http://physics.nist.gov/PhysRefData/DFTdata/

The table of "Atomic total energies and eigenvalues" are available:
    http://physics.nist.gov/PhysRefData/DFTdata/Tables/ptable.html
for the ground electronic configuration
    http://physics.nist.gov/PhysRefData/DFTdata/configuration.html
of the elements H - U (Z = 1, 92).

(From MMikami 041022)
"Atom Graphical Interface" : http://aloof.cii.fc.ul.pt/AGI/
a simple GUI for the Atom program developed by J.L.Martins, 
J.M.Pacheco, C.L.Reis.
One can perform all-electron calculation/pseudopotential generation 
for an atom in the periodic table (from H to Mt).
For details, see also http://aloof.cii.fc.ul.pt/AGI/info.html .
NB: the format of the generated pseudopotential is not compatible
with ABINIT yet...