Code reuse is a common activity in software development and is one of the main reasons for code clones. A code clone is a part of the source code that is identical, or highly similar, to another part (clone) in terms of structure and semantics. Various clone detection techniques and tools have been proposed over last few years. Code cloning is found to be a more somber and serious problem in industrial software systems. A large number of clone detection tools are available and in order to make use of the right tool for detection of clones very important. The aim of this paper is to analyze various clone detection tools.