Deep Web & Invisible Web

Deep Web. Deep Web Research. Online Search Tools - Deep Web Search. Les bases de données gratuites. Près de 20 ans après sa création, le répertoire de bases de Données grAtuites Disponibles sur Internet ferme ses portes.

Crée en 1996 Dadi, produit pionnier et phare de l’URFIST de Lyon, a eu pour objectif de recenser les ressources libres disponibles sur le Web à une époque où ce dernier faisait ses premiers pas, sans moteurs de recherches. Jean Pierre Lardy, alors co-responsable de l’Urfist de Lyon et enseignant chercheur en physique, a imaginé puis animé Dadi pendant une quinzaine d’années, dans le but de donner à voir les ressources du web invisible en libre accès utiles au monde académique.

Véritable aide à la recherche dans un univers en pleine mutation, DADI connaîtra un usage important et comptera parmi les ressources incontournables en France pour la recherche d’information. Son impact rayonnera dans les pays francophones comme la Belgique et le Canada. La Bibliothèque Nationale de France a réalisé un archivage régulier de Dadi. Discover over 70,000+ databases and specially search engines. IncyWincy: The Invisible Web Search Engine. Recommended Gateway Sites for the Deep Web. Recommended Gateway Sites for the Deep Web And Specialized and Limited-Area Search Engines This portion of the Internet consists of information that requires interaction to display such as dynamically-created pages, real-time information and databases.

Currently estimated to be over 100 times larger than the surface web, the Deep Web houses billions of documents in databases and other sources, over 95% of which are available to the public. As crawler-based search engines cannot access these documents, specialized sources such as these currently provide our only access. General Gateways | Humanities | Social Sciences Science and Technology | Health Sciences Business and Government | Reference, Popular Culture | Other General Gateways: Invisible Web Directory (highly recommended) An excellent gateway to some of the best research-oriented invisible web resources available. Resource Discovery Network A well-annotated listing of Deep Web resources. Artifact - Arts and Creative Industries RxList. Deep Web Research 2012. Bots, Blogs and News Aggregators ( is a keynote presentation that I have been delivering over the last several years, and much of my information comes from the extensive research that I have completed over the years into the "invisible" or what I like to call the "deep" web.

The Deep Web covers somewhere in the vicinity of 1 trillion plus pages of information located through the world wide web in various files and formats that the current search engines on the Internet either cannot find or have difficulty accessing. The current search engines find hundreds of billions of pages at the present time of this writing. In the last several years, some of the more comprehensive search engines have written algorithms to search the deeper portions of the world wide web by attempting to find files such as .pdf, .doc, .xls, ppt, .ps. and others. This Deep Web Research 2012 report and guide is divided into the following sections: 99 Resources to Research & Mine the Invisible Web by Jessica Hupp. The WWW Virtual Library.