Update README.md

README.md

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 # RT-Thread操作系统的CMSIS-RTOS1兼容层
 ## CMSIS-RTOS1 Application Compatibility Layer (ACL) for RT-Thread
 ## 让基于CMSIS-RTOS1开发的应用层无感地迁移到RT-Thread操作系统
+
+### 1.1 RT-Thread的其他RTOS兼容层
+
+- RT-Thread操作系统的μCOS-III兼容层：https://github.com/mysterywolf/RT-Thread-wrapper-of-uCOS-III
+- RT-Thread操作系统的μCOS-II兼容层：https://github.com/mysterywolf/RT-Thread-wrapper-of-uCOS-II
+- RT-Thread操作系统的FreeRTOS兼容层：https://github.com/RT-Thread-packages/FreeRTOS-Wrapper
+- RT-Thread操作系统的RTX5(即CMSIS-RTOS2)兼容层：https://github.com/RT-Thread-packages/CMSIS_RTOS2
+- RT-Thread操作系统的Arduino生态兼容层：https://github.com/RTduino/RTduino