Search Engines & General Subject Catalogues

Search Engines:

• Karlsruhe Virtueller Katalog - Search engine for library catalogues and internet bookshops
• Google Scholar - From one place, you can search across many disciplines and sources: articles, theses, books, abstracts and court opinions, from academic publishers, professional societies, online repositories, universities and other web sites
• Scirus - is the most comprehensive scientific research tool on the web. With over 370 million scientific items indexed at last count, it allows researchers to search for not only journal content but also scientists' homepages, courseware, pre-print server material, patents and institutional repository and website information
• Wolfram|Alpha - Today's Wolfram|Alpha is the first step in an ambitious, long-term project to make all systematic knowledge immediately computable by anyone. Enter your question or calculation and Wolfram|Alpha uses its built-in algorithms and a growing collection of data to compute the answer. Based on a new kind of knowledge-based computing
• Answers - a free, ad-supported Internet search service. Unlike competing search engines, Answers.com's search results do not include a page of links; instead they return a snapshot of text culled by editors who use more than 250 licensed sources, including encyclopedias, dictionaries, and atlases from publishers such as Houghton Mifflin Harcourt, Barron's, and Encyclopedia Britannica

Meta Search Engines:

• Yippy (former Clusty) - Queries several top search engines, combines the results, and generates an ordered list based on comparative ranking. This "metasearch" approach helps raise the best results to the top and push search engine spam to the bottom. But what really makes Yippy/Clusty unique is what happens after you search. Instead of delivering millions of search results in one long list, the search engine groups similar results together into clusters.
• Ixquick - the world's most private search engine. It doesn't record your IP address
• Turboscout - Access to all search-engines without retyping

General Subject Catalogues:

• DMOZ - The Open Directory Project is the largest, most comprehensive human-edited directory of the Web. It is constructed and maintained by a vast, global community of volunteer editors
• Detektor (in Norwegian) - General subject portal with quality ensured links (Deichman Library, Oslo)
• BUBL LINK - Catalogue of Internet Resources
• Librarian's Internet Index - American portal edited by librarians in California