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Deep Web Wiki is a volunteer-led search organization that maintains a database containing detailed descriptions of so-called "Deep Web" sites that are either ignored or poorly indexed by the major search engines; it is estimated that ~95 to 99% of Web-accessible content cannot be reached using conventional web crawling methods. The Deep Web Wiki also contains other useful information sites that often are not popular enough to rank on the first few pages of search engine's results--despite their value.The Deep Web Wiki depends on the efforts of Web users to build the wiki and improve the quality and accuracy of site descriptions. Contributions to the index can be made either anonymously or by signing up for a free membership that allows members to track their contributions and watch pages of interest.

A web search engine is designed to search for information on the World Wide Web and FTP servers. The search results are generally presented in a list of results and are often called hits. The information may consist of web pages, images, information and other types of files. Some search engines also mine data available in databases or open directories. Unlike Web directories, which are maintained by human editors, search engines operate algorithmically or are a mixture of algorithmic and human input.

LinkedWords (LW) is an innovative contextual platform built upon millions of English words and phrases organized into contextual categories, paths, pages and URLs using basic semantics whose mission is to maximize contextual linking among web sites across the Web. Since its launch in June 2006 LW's concept has essentially proven to be very effective vehicle in helping web sites get contextually linked in on a content area level so that Internet users and smart robots discover their information in context resulting in highly relevant visitors for them.

Web Search by the people, for the people YaCy is a free search engine that anyone can use to build a search portal for their intranet or to help search the public internet. When contributing to the world-wide peer network, the scale of YaCy is limited only by the number of users in the world and can index billions of web pages. It is fully decentralized, all users of the search engine network are equal, the network does not store user search requests and it is not possible for anyone to censor the content of the shared index. We want to achieve freedom of information through a free, distributed web search which is powered by the world's users.

YaCy.net/en/ is a free search engine that anyone can use to build a search portal for their intranet or to help search the public internet. When contributing to the world-wide peer network, the scale of YaCy is limited only by the number of users in the world and can index billions of web pages. It is fully decentralized, all users of the search engine network are equal, the network does not store user search requests and it is not possible for anyone to censor the content of the shared index. We want to achieve freedom of information through a free, distributed web search which is powered by the world's users.

Usable Web is a stale collection of links about information architecture, human factors, user interface issues, and usable design specific to the World Wide Web.

Waatp.com is an online people search service. It aggregates data from open sources such as social networks, web search engines and even offline sources. Waatp.com people search engine provides access to aggregated information about requested person from the number of sources so the user can get all public information instantly and at one place.

Our mission is to bring users the best information on the Web for any topic, employing human insight and methodical review.

Get the information you need to balance the cost and value of taxonomy and metadata Access and browse a comprehensive, global directory of taxonomies and classification and categorization schemes Get up-to-date information about taxonomy references, resources, latest news and events Link to professional associations and organizations for solutions to your taxonomy needs

Zakta relieves the pain of deeper Web searches. Zakta lessens your frustration and saves precious time by giving you powerful tools to find, edit, save, share, and truly benefit from information on the web

"RefSeek is a web search engine for students and researchers that aims to make academic information easily accessible to everyone. RefSeek searches more than five billion documents, including web pages, books, encyclopedias, journals, and newspapers."

Spokeo is a search engine specialized in organizing people-related information from phone books, social networks, marketing lists, business sites, and other public sources. Most of this data is publicly available on the Web.  For example, you can find people's name, phone, and address on Whitepages.com, and you can get home values from Zillow.com.  That said, only Spokeo's algorithm can piece together the scattered data into coherent people profiles, giving you the most comprehensive intelligence about anyone you want to find.

is the most comprehensive scientific research tool on the web. With over 410 million scientific items indexed at last count, it allows researchers to search for not only journal content but also scientists' homepages, courseware, pre-print server material, patents and institutional repository and website information.

We decided to reorganize the Internet and rethink search. We decided to build something that would make it easy for you to find complete, correct, and relevant information.

Foundem is the world's most advanced vertical search engine. Our aim is to significantly improve the way people search the Web for information, products, and services, by providing a one-stop, multi-domain parametric search and price comparison service that goes far beyond the keyword-centric restrictions of conventional search engines. Whether users are looking for flights, a job, a television, sunglasses, or even a new house, Foundem's revolutionary vertical search technology allows them to search and compare the market in seconds, saving time, effort, and money.

The "Search Engines" table displays detailed information on search engines including the website category and website owner.

"Empowering knowledge with every search Explore open access and paywalled academic literature across all disciplines Trusted by over 675.3K readers Access over 40.7M research publications Download over 1.1M e-Books Find res"

covering search engines, databases, online information collectios since