Bing is a web search engine owned and operated by Microsoft. The service has its origins in Microsoft's previous search engines: MSN Search, Windows Live Search and later Live Search. Bing provides a variety of search services, including web, video, image and map search products. It is developed using ASP.NET.
Baidu, Inc., incorporated on 18 January 2000, is a Chinese multinational technology company specializing in Internet-related services and products, and artificial intelligence, headquartered at the Baidu Campus in Beijing's Haidian District. It is one of the largest AI and internet companies in the world. The holding company of the group was incorporated in the Cayman Islands. Baidu was established in 2000 by Robin Li and Eric Xu. Baidu is currently ranked 4th overall in the Alexa Internet rankings.
Business.com is a digital media company and B2B web destination which offers various performance marketing advertising, including lead generation products on a pay per lead and pay per click basis, directory listings, and display advertising. The site covers business industry news and trends for growth companies and the B2B community to stay up-to-date, and hosted more than 15,000 pieces of content as of November 2014. Business.com operates as a subsidiary of the Purch Group since being acquired in 2016.
BASE (Bielefeld Academic Search Engine) is a multi-disciplinary search engine to scholarly internet resources, created by Bielefeld University Library in Bielefeld, Germany. It is based on free and open-source software such as Apache Solr and VuFind. It harvests OAI metadata from institutional repositories and other academic digital libraries that implement the Open Archives Initiative Protocol for Metadata Harvesting (OAI-PMH), and then normalizes and indexes the data for searching. In addition to OAI metadata, the library indexes selected web sites and local data collections, all of which can be searched via a single search interface.
GenieKnows Inc., a privately owned vertical search engine company based in Halifax, Nova Scotia. Like many internet search engines, its revenue model centers on an online advertising platform and B2B transactions. It focuses on a set of niche search markets, or verticals, including health search, video games search, and local business directory search.
Google Scholar is a freely accessible web search engine that indexes the full text or metadata of scholarly literature across an array of publishing formats and disciplines. Released in beta in November 2004, the Google Scholar index includes most peer-reviewed online academic journals and books, conference papers, theses and dissertations, preprints, abstracts, technical reports, and other scholarly literature, including court opinions and patents.