[Wien] GW calculations using FHI or GAP2?

[Eesha Andharia]

Hi,
  I want to perform GW calculation on Wein2k DFT values.
Now, I am more confused. Should I use FHI gap or GAP2? Is GAP2 a new verion
of FHI gap?

Further if these are freely available, I do not see download link on any of
their websites.

Also, can I use FHI gap or GAP2 with w2web graphical interface? Or it has
to be on the command line?

Awaiting your reply.

Yours sincerely,
Eesha
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