More Internet Search Tips

DigiBib – Literature search engine for books, articles and scientific full texts as well as freely accessible online sources
BASE (Bielefeld Academic Search Engine) - Search engine for scientific web documents, some of the full texts are freely accessible
Dimensions – Search engine for scientific publications of all kinds
Google Scholar –Specialized search engine for scientific publications
Karlsruhe Virtual Catalog (KVK) – Book search engine for finding hundreds of millions of media in catalogs worldwide as well as freely accessible online sources
List of academic databases and search engines – Directory of scientific search engines
CiteSeerX – Search engine and literature database for freely accessible scientific information on the internet
scienceresearch.com – Search engine for scientific data
WolframAlpha – computational knowledge engine
WorldWideScience – Searches scientific databases worldwide, available in multiple languages

Search engines and search services - Link collection of Heidelberg university library
Metasuchmaschine.org – Overview of German-language and international metasearch engines
www.toool.de – Over 1,000 selected links and 10 search masks

Search Strategies – Compilation by Karen Blakeman
Suchmaschinen kompetent nutzen – Basic information of the EU initiative klicksafe (German only)

Internet Archive: Wayback Machine – Long-term archiving of digital data in freely accessible form

Datenbank-Infosystem (DBIS) – Directory of scientific databases, sorted by subject
Subject Portals – Links to the subjects taught at the RPTU
WEBIS – Overview of the various specialist information services for science (FID) and their predecessors, the special subject collections (SSG)

German Digital Library – Culture and knowledge online
Europaeana Collections – European cultural heritage
Digital Public Library of America – Digital library that aggregates metadata around the United States
World Digital Library – International digital library

KLUEDO – Document server of the RPTU
Repositories from German universities – Deutsche Initiative für Netzwerkinformation e.V.