List of the Top 3 IoT Operating Systems for LVGL in 2025

RT-Thread, which stands for Real Time-Thread, is a multi-threaded operating system specifically built for embedded real-time applications. This operating system is designed to facilitate multi-tasking, enabling various tasks to operate concurrently. While a single processor core can only handle one task at a time, RT-Thread manages to execute all tasks swiftly and alternates between them based on their priority, which gives users the perception that tasks are running simultaneously. Primarily developed in the C programming language, RT-Thread is straightforward to comprehend and transfer to different environments. It employs object-oriented programming techniques in the design of real-time systems, leading to code that is not only elegant and structured but also modular and highly customizable. RT-Thread is available in various editions. The NANO version features a compact kernel that requires merely 3KB of flash memory and 1.2KB of RAM, making it suitable for devices with limited resources. Additionally, for more capable IoT devices, RT-Thread supports an online software package management tool in conjunction with system configuration utilities, facilitating a user-friendly and rapid modular design process. This versatility allows developers to easily adapt the system to meet their specific project needs.

The MicroPython pyboard is a compact yet powerful electronic circuit board that runs MicroPython directly on the hardware, creating a low-level Python environment ideal for various electronic projects. This version of MicroPython is packed with features, such as an interactive prompt, arbitrary precision integers, closures, list comprehension, generators, and exception handling, among other capabilities. Notably, it is engineered to operate within just 256k of code space and 16k of RAM. The main aim of MicroPython is to ensure a high level of compatibility with standard Python, allowing for easy code transfer between desktop systems and microcontrollers or embedded devices. Furthermore, this adaptability makes it a preferred choice for both hobbyists and professionals, enabling them to apply their existing Python expertise to new hardware applications. The pyboard thus serves as a bridge between software development and hardware innovation, paving the way for exciting new projects.

This system encompasses a wide array of devices, from fundamental embedded environmental sensors and LED wearables to sophisticated embedded controllers, smartwatches, and IoT wireless applications, featuring a configurable architecture that includes stack-overflow protection, permission tracking for kernel objects and device drivers, and enhanced thread isolation through thread-level memory protection across various architectures such as x86, ARC, and ARM, along with distinct userspace and memory domains. Additionally, for systems that do not have a Memory Management Unit (MMU) or Memory Protection Unit (MPU) and those constrained by limited memory, it facilitates the combination of application-specific code with a customized kernel to create a monolithic image that can be seamlessly loaded and executed on the hardware. Within this framework, both the application and kernel code function within a single address space, promoting efficient resource management and performance enhancements. Consequently, this architecture is adept at enabling even the most resource-limited environments to effectively utilize advanced applications and sophisticated functionalities, thereby broadening the scope of what can be achieved in embedded systems.