Also see Newspaper Collections. For historical also see Finding World Newspapers at Princeton.
Irish Newspaper Archive
Contains electronic versions of Irish newspapers from the 1700's to current day.
19th-21st Century newspapers from the United Kingdom.
Le Monde (December 19, 1944+)
Frankfurter Allgemeine Archiv. F.A.Z.-BiblioNet contains digitized articles from Frankfurter Allgemeine Zeitung since 1993 and Frankfurter Allgemeine Sonntagszeitung beginning in 1995; F.A.Z. 49-92 contains digitized articles from Frankfurter Allgemeine Zeitung from 1949-1992 and Frankfurter Allgemeine Sonntagszeitung from 1990-1992; and Frankfurter Rundschau contains digitized articles from Frankfurter Rundschau since 1995.
Gudok Digital Archive (DA-GUDO) (1918+)