The proliferation of the smart and sensing devices in the field of communicating networks support in to develop the so-called Internet of Things (IoT). IoT considers a new paradigm for evolutionary of internet connectivity. IoT refers to connect objects around the real world with the Internet to accomplish the common goals and monitor these objects via wire/wireless communications. It plays a large and important role in human life through its use in many applications of human interest. Through using a variety of enabling wireless technologies as Wireless Sensor Networks (WSN), Radio Frequency Identification (RFID), Near Filed Communication (NFC), and barcode in the applications. These technologies will support IoT to transform the internet into a fully integrated future internet. This paper attempts to provide a comprehensive survey of the available literature related to IoT technologies and its applications in many areas of modern-day living. Identify the trend and directions of future research in IoT applications, depend on a comprehensive literature review and the discussion of the achievements of the researchers.