Search Wikia
- Jimmy Wales and Wikia aim to create a an open source Internet search engine, to which the community can contribute.
- http://search.wikia.com/wiki/Search_Wikia

Content Analyst
- Provides patented software that uses both advanced mathematics and machine learning to provide conceptual search. Company profile, technologies, markets and partners.
- http://www.contentanalyst.com

ApproxiMatch
- Enterprise search solutions based on fuzzy string matching algorithms. Gives brief biographies of the management, details of technology, products and applications, and news.
- http://www.approximatch.com

Seekport
- A European provider of white-label search services to portals, Internet Service Providers (ISPs) and media corporations integrating functionality into their own offerings. Mission statement, company structure and description of services.
- http://www.seekport.biz/

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.
- http://www.relona.net

Search Solutions, Inc.
- Develops search portals based on Google's web index and search appliance technology.
- http://www.searchsi.com/

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.
- http://www.closerlooksearch.com

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.
- http://www.quintura.com/

Anomic
- Provides the software for YACY - a distributed Web crawler and caching HTTP/HTTPS proxy.
- http://www.yacy.net/

Local Matters
- Provider of advanced search and content for media publishers and directory assistance service providers.
- http://www.localmatters.com

WorldLight
- The company which produces the search engine Entire Web explains its background, products and partners.
- http://www.worldlight.com/

Convera
- Provider of vertical search services for publishers. Company profile, news, events and customer case study.
- http://www.convera.com/

Northern Light
- Provides search and content integration solutions for enterprises and individuals, includes services and technology licensing details.
- http://www.northernlight.com/

aTerra
- Builds category specific search engines for web sites. Also develops autonomous intelligent search agents.
- http://www.aterra.com/

Fast Search
- The Norwegian company that developed the AllTheWeb search engine. Corporate background, products, technology, news and events.
- http://www.fastsearch.com/