Libraries in the rest of the world

LibDex - Library Index
This is a portal that enables you to access 18.000 libraries worldwide.

The European Library (previously Gabriel)
This portal allows you access all the National Libraries of Europe, offering information about their services and online exhibitions.

Universia.es - el portal de los universitarios
This portal includes a section devoted to libraries. Simply choose a particular country and click on 'libraries'.

Latin American libraries and archives
This is part of LANIC (Latin American Network Information Center) and lists all major Latin American libraries by country.