Abstract: Use of wireless sensor network (WSN) has resulted in many revolutionary changes in human life. But research community has not been able to create a common platform which will enable the implementation of different range of applications easy using that platform. “SWiFiNet” is task distributed reusable system architecture. In this architecture complex functionality has been transfer to the second tire devices of the system. This survey paper aims to analyze various reusable wireless sensor networks and concept related to “SWiFiNet”.