France
Catalogue Collectif de France--The catalog collectif de France localize some 30 millions of documents preserved French libraries and archives
Gallica --Available through the Bibliothèque Nationale de France, Gallica provides access to a large and growing corpus of digitized texts.
Bibliothèques municipales spécialisées de Paris--A centralized online catalog to the following specialized city libraries of Paris: la Bibliothèque administrative, la Bibliothèque des Archives de Paris, la Bibliothèque des Arts graphiques, la Bibliothèque du cinéma, la Bibliothèque Forney, la Bibliothèque historique de la ville de Paris, la Bibliothèque des littératures policières, la Bibliothèque Marguerite Durand, la Bibliothèque du Tourisme et des voyages, and le Centre de documentation sur les métiers du livre.
Catalogue des bibliothèques et médiathèques de prêt de la Ville de Paris--This catalog offers access to the holdings records of 65 Parisian lending libraries.
Other countries
There is an Archives service in every "département" in France. For a complete list, go to:
http://www.archivesdefrance.culture.gouv.fr/ressources/en-ligne/etat-civil/
Here is a selection of online archival sources:
Vie-publique.fr is produced by the DILA (Directorate of Legal and Administrative Information) and attached to the services of the French Prime Minister. It provides freely available information for understanding public policies and current social topics.