Summon

Hi :)
We (a french academic library) are using drupal for our website (http://bu.univ-angers.fr).

We're considering using now Primo from ExLibris or Summon/Serial Solutions.
And of course, the integration of that possible discovery tool into our website is an important part of our questioning

On the Summon side, I know there's a module that works (at least one french academic library is using it > see "catalogue+" there http://bibliotheque.univ-paris-diderot.fr/ ).