TOP SEVEN IoT OPERATING SYSTEMS IN MID-2020

The Internet of Things (IoT) is the close future of the Internet. In the introductory part of the paper, IoT and 5G networks are analyzed, and specifications of operating systems (OS) suitable for IoT are defined, as well as advantages and disadvantages of using Wi-Fi technology within IoT systems. During the preparation of the paper, 56 different IoT operating systems were analyzed according to different criteria, and, in Chapter 2, lists of the seven most popular IoT OS and seven operating systems suitable for IoT devices with small memories were created. The following is a selection of the most suitable operating systems in mid-2020. The ranking was performed based on similar ranking lists from the literature, based on the comments of the users of these operating systems, and the authors' analysis based on twelve additional criteria. Based on the obtained results of the analysis, it was shown that Contiki-NG, Riot OS, TinyOS, Raspberry Pi OS, Ubuntu Core, Zephyr IoT OS, and Windows 10 for IoT showed the best results. Each of the ranked OSs in the continuation of the paper is considered from the aspects of basic characteristics, architecture, basic pros, and cons, as well as the possibility of application, listing significant practical solutions. The third part of the paper presents a checklist that should be followed when choosing an OS for an IoT solution. Chapter 4 provides conclusions that can be drawn based on the performed analyzes and the presented work.