aTerra
Builds category specific search engines for web sites. Also develops autonomous intelligent search agents.
Exalead
Company researching search engine technology and providing a demonstration using listings from the French and English language sections of the ODP and ODP thematic classification.
Fast Search
The Norwegian company that developed the AllTheWeb search engine. Corporate background, products, technology, news and events.
Grub
An open-source distributed Web-crawling project owned by Looksmart. A client can be downloaded for volunteers to contribute to crawling the Web.
Northern Light
Provides search and content integration solutions for enterprises and individuals, includes services and technology licensing details.
Nutch
A handful of developers working part-time to put together a demo of an open source web-search engine, coded entirely in Java.
WorldLight
The company which produces the search engine Entire Web explains its background, products and partners.