Third International Conference on Green Computing and Engineering Technology 2017 (ICGCET'17) was held on 08-10 August 2017 in The Killaloe Hotel, Kincora Harbour, Killaloe, County Clare, Ireland. The main objective of ICGCET'17 was to present the research from different areas of science and technology. This conference provided a platform for researchers and scientists across the world to exchange and share their experiences and research results about all aspects of electronics and information technology. This conference also provided an opportunity to interact and establish professional relations for future collaboration. The conference aims were to promote innovations and work of researchers, engineers, students, and scientists from across the world on Advancement in electronic and computer systems. The basic idea of the conference was what more can be done using the existing technology. In today's world, electronic and computer systems play an important role for future's innovation. These proceedings have details of the research paper presented at this conference by researchers from more than 32 countries. This ICGCET conference is a sister conference of RTCSE conference.