JEUS (an abbreviation of Java Enterprise User Solution) is a Korean Web application server which is developed by TmaxSoft. It has been implemented in the Web systems of many companies along with WebtoB, TmaxSoft’s Web server solution and in Korea holds the largest (36%) share of the market.TmaxSoft released JEUS 1.0 in 2000. In 2001, it received J2EE 1.2 certification for JEUS 3.0., In 2013, it received the world’s first Java EE 7 certification for JEUS 8.