- http://www.culturaitalia.it/
- http://www.unesco.org/
- http://www.aib.it
- http://validator.w3.org/
- http://www.w3.org/WAI/WCAG1A-Conformance
- http://www.icra.org/sitelabel/
- http://marciana.venezia.sbn.it/CABI
- http://www.paulus.com.br/biblia-pastoral/_INDEX.HTM
- http://www.ceth.rutgers.edu/
- http://www.csdl.tamu.edu/
- http://www.delos.info/
- http://www.digicult.info/pages/index.php
- http://www.diglib.org/dlfhomepage.htm
- http://www.dlib.org/
- http://www.knaw.nl/ecpa/
- http://www.theeuropeanlibrary.org/portal/index.html
- http://www.ercim.org/
- http://www.icdlbooks.org/
- http://www.idpf.org
- http://www.michael-culture.org/
- http://www.minervaeurope.org/
- http://www.eulogos.net/
