DMOZ: Searchable people-reviewed web directory categorized by language, subject and location. Edited and run by volunteers, supported by AOL. Content available in over 90 languages

iTools: Provides search, language and research tools on one page. Includes web, discussion groups, and people search, language identifier, translator, dictionaries, encyclopedia, biography, quotations, and telephone area codes

OpenSearch.org: Official site. Includes specifications, developer documentation and frequently asked questions

Search Engine Land: News and information about search engine marketing, optimization and how search engines work for searchers