Search Engines: a search engine is a tool or device used to find relevant information on the World Wide Web. Search engines are composed of a spider, index, relevancy algorithms and search results. Unlike web directories, which require human editors, search engines are able to use their algorithms to maintain real-time information. The information they generate can include documents, images, files and more.
Search engines are now one of the most popular online tools; in fact, it is likely that you have used one today, perhaps for multiple searches, and perhaps even to find this glossary. This technology originated as a list webservers, edited by computer scientist Tim Berners-Lee and hosted by CERN. However, as more webservers were added, this list became insufficient and unable to keep up. The first tool for searching the Internet was later created in 1990 by three computer science students at McGill University. As a result, several search engines emerged and competed over the course of the 1990s, including Magellan, Excite and Northern Light. Today, there are a variety of these tools available, with Google serving as the site of choice for most of the world's searches.
In Asia and the Middle East, however, Muslims have repeatedly attempted to create "faith-based", Islamic search engines, largely to no avail. But with similar efforts in Jewish and Christian subcultures, it will be interesting to see how the beliefs of the user eventually might affect the tool they used to find information.