Quality of Experience (QoE) provides human centric assessment of multimedia quality. QoE of a multimedia service is affected by various application and network layer QoS parameters; content and business parameters. In this paper, we propose a new QoE framework for Multimedia services (named as QoM) for run time quality evaluation of video streaming services based on the influence of QoE factors, various network and application level QoS parameters. The newly proposed QoM framework monitors QoS and QoE data, evaluates it and moreover, in the event of decline in QoE, it can also send alert messages to the Administrator based on some policy rules. Our new QoM framework is being launched as an open-source QoE evaluation tool for the industry and research community. More realistic experimental work is also underway and we intend to conduct user tests to evaluate the performance of the proposed QoM framework in a context of real 4G WiMax wireless networks.