The Internet of Things (IoT) is the inter-networking system administrates physical gadgets, vehicles, structures, and different things which are implanted with hardware, programming, sensors, actuators, and system network that empower exchange data, gather and trade information. The IoT enables articles to be detected and controlled remotely crosswise over existing system foundation, making open doors for more straight forward reconciliation between the physical world and PC based framework and bringing about enhanced effectiveness, exactness and monetary advantage. Internet of Things is playing a major role in automatic control of many applications remotely. In this paper variety of IoT applications such as automatic traffic control, railway crossing system and drip irrigation control systems are simulated using proteus software.