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Empas (hangul:엠파스) was one of the popular total internet search tools and web portal sites in South Korea. The service was launched in 1998 by Knowledge Plant Corporation (지식발전소), which changed its name to Empas Corporation in 2004.
Before its merger with Nate in 2009, Empas is one of the Korea's most popular web search engines, and was in competition with Yahoo! Korea, Daum, Nate, and Naver. Empas was once the second most popular web portal in South Korea, by unique page view, from 2000 to 2001, behind Yahoo! Korea. However, since dominance of Naver started in 2003, market share of Empas has had slowly declined, and by late 2005, Empas was fallen into the fifth place in South Korean web portals. In 2006, Aiming to check its main competition Naver's rapid expansion, SK Communications, which owns the Korea's popular social networking Website Cyworld, acquired Empas on October 19, 2006. With reorganisation of SK Communications business fields, Empas was merged with Nate.com, which was original web portal of SK Communications, and became Nate on March 1, 2009.
The name Empas was a combination of e-media and compass.