- FreeRTOS, FreeRTOS Real Time Kernel (RTOS)
- Zephyr Project
- Apache Mynewt
- Apache NuttX
- Contiki
- RIOT
- Mbed OS
- TinyOS
- LiteOS
RTEMS
RTEMS Real Time Operating System (RTOS)
RTEMS Real Time Operating System (Commercial)
FreeRTOS
Porting FreeRTOS+UDP to a Different Microcontroller
Comparison
Comparison of these RTOS
Zephyr – An Operating System for IoT
Zephyr – An Operating System for IoT