The wide area response based transient stability detection and control technology has become a hot research area in power system stability studies. Currently several different technologies have been proposed, but lots of problems still need to be solved before they can be applied to practice. In order to effectively analyze and compare the validity and practicability of these transient stability detection technologies, a wide area measurement system (WAMS) based prototype system is developed for power system real-time transient stability detection and control. Based on real-time measured data from PMU, the system simultaneously implements various response based transient stability detection and control technologies and provides visual presentation of results. The design of framework structure, implementation of function modules and engineering applications of the system are presented. Meanwhile, suggestions on future orientation of wide area response based transient stability control are given in the following aspects including time delay, data acquisition and control schemes generation. Engineering application demonstrates that the prototype system has a good perspective and is an effective tool for analysis and comparison of the wide area response based transient stability detection methods.