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This work proposes a novel priority based resource management framework for multimedia applications in distributed collaborative environment. Due to the dynamic nature of the collaborative environment, sometimes the network could be lightly loaded and sometimes highly congested. Moreover, application priority might be changed by the user dynamically. In this dynamic environment, Quality of Experience (QoE) of the end users would not be satisfactory without any resource management mechanism. Our proposed framework comprises of (i) a bandwidth estimation technique which efficiently calculates the total allowable bandwidth dynamically based on the network condition and the current application rate, and (ii) a priority based resource allocation algorithm which can dynamically control the individual flow rate according to the flow priority. Our extensive NS2 simulation work demonstrates the effectiveness of our proposed system.