Provides information, news and advice about web site searching technology. Includes a guide, search tools list, glossary, and opportunity to compare searches of its own site by different tools. Offers a free monthly email newsletter. http://www.searchtools.com/
Librarian Robert J. Lackie provides annotated links to directories, searchable sites, databases, and search engines useful for uncovering content that the general search engines fail to disclose. http://library.rider.edu/scholarly/rlackie/Invisible/Inv_Web.html
A directory of search engines: general, metasearch, pay-per-click, children's, subject, country and people search. All are described and can be rated. http://www.searchenginelinks.co.uk/
Search forms for the most effective engines in dozens of categories from Robert Skelton. Includes reviews, ratings, webmaster tools, and tutorials. http://searchenginez.com/
A directory of directories. Links to selected information rich web resources, both unspecialised and specialised, with a strong emphasis on United Kingdom based sites. http://www.alephsearch.co.uk/