Sensor networks are dense wireless networks of small, low-cost sensors which collect and propagate environmental data. Wireless sensor networks (WSNs) assist monitoring and controlling of physical environments from remote location with better accuracy. They have applications in a variety of fields such as environmental monitoring, military applications, and water or waste water monitoring and health care applications. Sensor nodes have various energy and computational constraints because of their economical nature and adhoc method of deployment. The objective of this involvement is to present expositive review content on currently available experimental tools used for most emerging field. Currently due to high cost of sensor nodes, the most researches in wireless sensor networks area is performed by using the experimental tools in various institutes and research centre’s before implementing real one. Also the facts gathered from these experimental tools can be realistic and convenient. So, the experimental tools provide the better option for studying the behavior of WSNs before and after implanting the physical one.