Bing (search engine) integration with Microsoft Bing search engine. In addition to the traditional web search functions, Bing Bar also allows search on other Bing services such as Images, Video, News and Maps. When users perform a search on another search engine, the Bing Bar's search box will automatically populate itself, allowing the user to view the results from Bing, should it be desired. Bing Bar also links to Outlook.com, Skype and Facebook. Microsoft released a beta version of Bing Desktop, a program developed to allow users to search Bing from the desktop, on April 4, 2012. The initial release followed shortly on
Web search engine formed the basis for W3Catalog, the web's first primitive search engine, released on September 2, 1993. In June 1993, Matthew Gray, then at MIT, produced what was probably the first web robot, the Perl-based World Wide Web Wanderer, and used it to generate an index called 'Wandex'. The purpose of the Wanderer was to measure the size of the World Wide Web, which it did until late 1995. The web's second search engine Aliweb appeared in November 1993. Aliweb did not use a web robot, but instead depended on being notified by website administrators of the existence at each site