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Cloud Computing is an innovation idea that has enabled the organizations to access high performance computing and storage infrastructure at reduced cost through internet. Cloud computing is model in which customer can access IT resources which are priced and provided on demand. Cloud Service providers charge user depending upon space or whatever service availed. It is not always possible for researchers and academicians to have the actual cloud infrastructure for performing experiments, executing or implementing their algorithms. To fulfill their need for the purpose of testing and actual providing them a feel of cloud services simulators are required. Nowadays cloud simulators are widely available in the market for researcher scholars. The objective of this research paper is to do comprehensive review of cloud computing simulators and to research out to get the best cloud computing simulation tool for security based research in area of Cloud.