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Domain Specific Modeling (DSM) tools have matured and became powerful over the past few years and are now used more frequently to model complex systems. Consequently, the demand for model management and collaboration among DSM tools becomes more important. In collaborative modeling, domain specific models are mostly edited and elaborated concurrently by different semi-autonomous users. Hence, there is a need for reconciliating these parallely evolved models so as to seamlessly work together. CSCW community proposes tools or techniques to ensure collaboration among general purpose modeling languages, but they do not give functionalities to support reconciliation and merging for asynchronous modification. In addition, management of communications among members of collaborative group could also help to facilitate collaboration in the group. In this paper, we propose a communication framework to manage exchanges of concurrently edited DSM models among users. Besides, we present a reconciliation framework to merge concurrently evolved DSM models.