Recently, green technology has become an attraction to researchers in engineering, manufacturing, material science, chemical engineering, environment science and energy areas. In this paper. Six keywords such as, energy saving, energy consumption, green manufacturing, waste reduction, green products, and sustainable manufacturing which were the research fields discussed in the International Symposium on Green Manufacturing and Applications (ISGMA) 2013 were chosen to see the trend and status of green technologies in research area. In the last two decades, the number of journal articles related to the research area of green technology has significantly increased. Engineering is the most widely discussed research area covering the green technology. Also journals from five major research areas in green technology were analyzed with 5-years H-index and the number of journal articles published in recent 5 years.