Third-party open-source software musl | 三方开源软件musl
Application compatibility test suite | acts应用兼容性测试套
Compilation and building framework and scripts | 编译构建框架和脚本
Development framework for extending the JS Native Module | 原生模块扩展开发框架
方舟JS运行时（ARK JavaScript Runtime）是OpenHarmony上JS应用使用的运行时。包含JS对象的分配器以及垃圾回收器（GC）、符合ECMAScript规范的标准库、用于运行ARK前端组件生成的方舟字节码（ARK Bytecode，abc）的解释器、用于存储隐藏类的内联缓存、方舟JS运行时对外的函数接口（AFFI）等模块。
LiteOS kernel for devices with few resources, such as the MCU | 适用于MCU等各种资源极小设备的LiteOS内核
LiteOS kernel for embedded devices with rich resources | 适用于资源较丰富嵌入式设备的LiteOS内核
Middleware libraries | 中间件库
Third-party open-source software wpa_supplicant | 三方开源软件wpa_supplicant
Peripheral driver of the Hardware Driver Foundation (HDF) | HDF外设驱动
System header files and standard libraries | 系统头文件和标准库
Hi3516DV300 chip driver software, including media drivers, media user-space libraries, and notice files | Hi3516DV300芯片驱动软件，包括：媒体驱动子目录、媒体用户态库子目录、NOTICE文件
Wi-Fi station/P2P/AP management, including enabling, disabling, scanning, connecting, and information obtaining operations | WiFi STA/P2P/AP模式的管理：开关、扫描、连接、WiFi信息
Implementation of media playback and recording | 媒体播放和录制功能实现
Common event and notification management framework | 通知和公共事件管理框架
