- Google
 - Google allows users to search the Web for images, news, products, video, and other content. - Yahoo!
- Yahoo! Internet portal provides email, news, shopping, web search, music, fantasy sport, and many other online products and services to consumers and businesses worldwide.
- MSN
- MSN's all-in-one Internet portal, the home of Hotmail, MSN Messenger, MSNBC News, Encarta, and Slate Magazine.
- LookSmart
- Provider of commercial search listings products and graphical advertising products that help businesses generate cost-effective sales leads.
- About.com
- Extensive network of sites by subject specialists who write articles, host discussions, publish free email newsletters and provide personally-reviewed links for each topic.
- Northern Light
- Provider of search and content integration technology and solutions for enterprises and individuals.
- Yahoo! Search Marketing
- Yahoo! Search Marketing (YSM) offers a variety of products and services for promoting businesses, including Sponsored Search, Local Advertising, Search Submit, Product Submit, Travel Submit, and Directory Submit.
- A9
- Search experience for e-commerce applications. A subsidiary of Amazon.com.
- Galaxy
- Searchable directory of manually edited listings.
- Fast Search & Transfer (FAST)
- Developer of search and real-time alerting technologies.
- Rocketinfo
- Search news and blog articles by keyword or browse articles by topic. Sells software providing additional search features.
- Terra Lycos
- Global Internet group that operates web sites in the United States, Europe, Asia, and Latin America.
- Nana
- Index of Israeli web sites provided in Hebrew, English, Russian, and Arabic.
- GuruNet
- Develops and markets its GuruNet Answer Engine, which provides quick integrated reference answers instead of just search engine links.
- Webhelp, Inc.
- Developer of contact centre technology and offshore customer service offerings providing cost effective voice, chat, and email support solutions to businesses.
- Internets
- Gives direct access to thousands of databases, saving you minutes in every search.
- Search123
- Pay-per-click search engine offering traffic partners shared revenue.
- Quigo Technologies, Inc.
- Features Deep Web (invisible web) search technologies.
- eTour
- Service selectively bringing web sites users and issues rewards for participating.
- BrightPlanet
- Applies automated technology to Internet search site identification, retrieval, qualification, classification, summarization, characterization, and publication.
- Semio Corporation
- Discovery search tool that uncovers relationships among Internet and Intranet documents.
- Mercado Software
- Provider of electronic catalogue search tools for commerce sites.
- Q-Search Information Brokers
- Customised Internet and database searches with hotlinked bibliographies.
- The Rail
- Building a railroad across the Internet.
- CloserLook
- Provider of content aggregation and online information retrieval services for enterprises, search engines and portals. Provides deep web search technology as well as general search and navigation technology in various categories by aggregating data from numerous online data sources in real-time.
- Panoptic
- PC-based device designed to filter and extract text and files from an organisation's intranet.
- InQuira
- Provider of customer search and navigation applications for business web sites.
- Pinpoint.com
- Infrastructure service provider of custom search solutions for businesses for both the wired and wireless Webs.
- StartSpot
- Publisher of site directories such as BookSpot and LibrarySpot.
- Kozoru
- Developing natural language search technology.
- DolphinSearch
- Relies on neural networks and fuzzy logic to extract meaning from text to return relevant search results.
- MyToolbar
- Offers free email, newsletters, directory, and search.
- Google Enterprise Search
- Linux-based search appliances that allow companies to perform searches on internal documents.
- Connect Online
- A selection of directories, search engines, portals, etc.
- Informational.com
- NoSearch
- Find sites by subject.
- Fingertek Information Services
- Searching the net so you don't have to.
- chinadotcom
- Provider of technology, marketing, and media services for enterprises throughout Greater China and the Asia-Pacific region.
- ABigClick
- Internet directory, free email, personals, auctions and more.
- Active Navigation
- Provides search, categorization, related pages, summarization, dynamic linking, and personalisation services for Web portals and corporate intranets.
- Searchformedia
- Search technology services for aggregating, indexing, and distributing multimedia content over the web, to desktop clients, and to mobile devices.
- GO Hwy
- Intellinews
- Will find usenet posts you're interested in. All selected posts are e-mailed to you each day.
- ExoSearch Ltd.
- Offer a human researcher, with subject area or professionally relevant experience, to produce a summary report within 24 hours of order.
- OpenSearch
- Provides web directory, search engine, and commercial web site services.
- iaNett
- Develops and markets scalable Internet searching technology which permits full search engine integration into web sites.
- Meaning Master Technologies
- Developers of a search technology that uses a natural language interface.
- A Net Source
- Features and reviews cover 21 categories.
- NetInfo2U
- Compiles lists of resources and information from the Internet for a fee.
- Back of the Site Indexing
- Prepares subject indexes to help visitors navigate Internet, intranet, and extranet sites.
- Info-Xpress
- A unique indexer for the United States and individual cities.
- Blackle
- Environmentally-friendly search engine. The background is mostly black to reduce energy consumption and to remind people to take steps to save energy in their everyday lives.
- Google Custom Search Business Edition
- Allows users to put a Google search box on their website and allows visitors to access search results from any website that they choose.
- IBM OmniFind Yahoo! Edition
- Extract value from your business information with a simple, free enterprise search solution.
- Search Europe
- Search engine and directory dedicated to Europe and everything European.
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