This book constitutes the proceedings of the 6th International Conference on Distributed Computing and Internet Technology, ICDCIT 2010, held in Bhubaneswar, India, in February 2010. The 26 papers presented consists of 12 long papers, 9 short papers and 5 extended abstracts. They were carefully reviewed and selected from 91 submissions. In addition the volume contains 4 invited talks. The topics covered are networking, grid computing and Web services, internet technology and distributed computing, software engineering of secured systems, and societal applications.