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1zephyrproject-rtos / zephyrPrimary Git Repository for the Zephyr Project. Zephyr is a new generation, scalable, optimized, secure RTOS for multiple hardware architectures.CApache-2.0 · PermissiveInsufficient rank history16,98710,339——2026-11-03

2RT-Thread / rt-threadRT-Thread is an open source IoT Real-Time Operating System (RTOS). https://rt-thread.github.io/rt-thread/CApache-2.0 · PermissiveInsufficient rank history12,3245,486——2026-11-03

3platformio / platformio-coreYour Gateway to Embedded Software Development Excellence :alien:PythonApache-2.0 · PermissiveInsufficient rank history9,581917——2026-10-16

4nhivp / Awesome-EmbeddedA curated list of awesome embedded programming.UnknownUnlicense · PermissiveInsufficient rank history9,3121,240——2026-10-10

5RIOT-OS / RIOTRIOT - The friendly OS for IoTCLGPL-2.1 · Share derivative sourceInsufficient rank history5,8312,115——2026-11-03

6alibaba / AliOS-ThingsA highly scalable IoT operating system for the IoT field. For more information, please go to the official website https://www.aliyun.com/product/aliosthingsCApache-2.0 · PermissiveInsufficient rank history4,6331,155——2023-07-04

7apache / nuttxApache NuttX is a mature, real-time embedded operating system (RTOS)CApache-2.0 · PermissiveInsufficient rank history4,0991,745——2026-11-03

8littlekernel / lkLK embedded kernelCMIT · PermissiveInsufficient rank history3,704771——2026-10-29

9eclipse-threadx / threadxEclipse ThreadX is an advanced real-time operating system (RTOS) designed specifically for deeply embedded applications.CMIT · PermissiveInsufficient rank history3,559938——2026-11-02

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