Anomic: Provides the software for YACY - a distributed Web crawler and caching HTTP/HTTPS proxy.
aTerra: Builds category specific search engines for web sites. Also develops autonomous intelligent search agents.
CloserLook Search: Builds custom vertical search engines for businesses and portals. Displays sample topical searches and provides news and information on its technology, which includes invisible web search.
Convera: Provides enterprise search, retrieval and categorization solutions.
Fast Search: The Norwegian company that developed the AllTheWeb search engine. Corporate background, products, technology, news and events.
Local Matters: Provider of advanced search and content for media publishers and directory assistance service providers.
Northern Light: Provides search and content integration solutions for enterprises and individuals, includes services and technology licensing details.
Quintura: Has developed a downloadable context-based web search client using data clustering, visualization and context management, which works together with the major search engines. Includes company profile, demonstration and weblog.
Relona: A division of Coroman Systems, Inc., which has developed a self-correcting search algorithm and a presentation of results that combines searching and browsing. Explains the technology and its benefits.
WorldLight: The company which produces the search engine Entire Web explains its background, products and partners.