"The Engineering Web makes it faster and easier for you to research topics, products, and services by limiting your search to technical and engineering-related Web sites."

"OMNI (Organising Medical Networked Information) is a gateway to evaluated, quality Internet resources in health and medicine, aimed at students, researchers, academics and practitioners in the health and medical sciences. OMNI is created by a core team of information specialists and subject experts based at the University of Nottingham Greenfield Medical Library, in partnership with key organisations throughout the UK and further afield."

"Elsevier Science developed Scirus, a search engine specifically designed for scientists. It helps you easily locate high-quality scientific information from the Web, by illuminating only those sites and journal databases with scientific content. It also spotlights peer-reviewed articles and PDF's that are hard to see using other search engines.
Scirus lights the path to key scientific content because it:

• Pinpoint scientific, scholarly, technical and medical data on the Web;
• Covers over 200 million science-related pages;
• Find the latest reports, peer-reviewed articles, patents, pre prints and journals that other search engines miss;
• Offer unique functionalities designed for scientists and researchers.
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"The Social Science Information Gateway (SOSIG) is a freely available Internet service which aims to provide a trusted source of selected, high quality Internet information for students, academics, researchers and practitioners in the social sciences, business and law. It is part of the UK Resource Discovery Network."

SOSIG Internet Catalogue
"The SOSIG Internet Catalogue an online database. It offers users the chance to read descriptions of resources available over the Internet and to access those resources directly. The Catalogue points to thousands of resources, and each one has been selected and described by a librarian or academic. The catalogue is browsable or searchable by subject area."

Social Science Search Engine
"This is a database of over 250,000 Social Science Web pages. Whereas the resources found in the SOSIG Internet Catalogue have been selected by subject experts, those in the Social Science Search Engine have been collected by software called a 'harvester' (similar mechanisms may be referred to as 'robots' or 'Web crawlers')."