LiteOS
| Developer | Huawei Technologies Co., Ltd. | 
|---|---|
| Written in | C, assembly language, Shell | 
| OS family | POSIX | 
| Working state | Discontinued | 
| Source model | Open source | 
| Initial release | 20 May 2015 | 
| Final release | V5.0 / December 2020 | 
| Repository | https://gitee.com/LiteOS | 
| Marketing target | Internet of things, smartwatches | 
| Available in | English | 
| Kernel type | Real-time Microkernel | 
| Influenced by | Unix, FreeRTOS, Unix-like, Integrity, VxWorks (POSIX) | 
| License | BSD 3-clause | 
| Succeeded by | OpenHarmony | 
| Official website | "LiteOS: Huawei LiteOS". Gitee.com. | 
Huawei LiteOS is a discontinued lightweight real-time operating system (RTOS) developed by Huawei. It is a POSIX compliant operating system for Internet of things (IoT) devices, and free and open-source software, released under a BSD 3-clause license. Microcontrollers of different architectures such as ARM (M0/3/4/7, A7/17/53, ARM9/11), x86, and RISC-V are supported by the project. Huawei's LiteOS is part of their '1+8+N' Internet of things system, and has been featured in several open source software development kits and industry offerings.
Smartwatches by Huawei and its former Honor brand run LiteOS. LiteOS variants of kernels has since been incorporated into the IoT-oriented HarmonyOS with open source OpenHarmony.