Abstract

In the new years, there is a monstrous flood of progressive information attributable to the developing amount of dispersed use of programming tools that consistently creates a huge quantity of information streams. The notable innovation is known as Complex Event Processing (CEP) which can manage enormous measures of information from different sources relying upon the consistency of information to produce a precise outcome to deal with dynamic information continuously. Subsequently, understanding existing CEP techniques and instruments is trying to create a vigorous and compelling CEP framework. Here, in this review paper, we have considered nearly 25-50 research papers related to CEP systems. According to existing research papers, some of the limitations were found by using the CEP engine and tools. To overcome that, we have explained new leading tools compared with existing tools