|6|[sig-riscv](https://gitee.com/openharmony/community/blob/master/sig/sig-riscv/sig-riscv.md)|RISC-V SIG aims to build a RISC-V ecosystem for OpenHarmony, provide instructions to build software, maintain supports for RISC-V devices, and enable security capabilities like TEE on RISC-V. RISC-V SIG will promote more developers to involve in developing OpenHarmony on RISC-V.|[@yujiageng](https://gitee.com/yu_jia_geng)|
|7|[sig-toolchains](https://gitee.com/openharmony/community/blob/master/sig/sig-toolchains/sig_toolchains.md)|Tools & Toolchains development and planning|[@berolinux](https://gitee.com/berolinux)|
|8|[sig-kernel](https://gitee.com/openharmony/community/blob/master/sig/sig-kernel/sig_kernel.md)|Maintenance of file system releated open source software to support the commercial use|[@wangmihu](https://gitee.com/wangmihu2008)|
|9|[sig-basicsoftwareservice](https://gitee.com/openharmony/community/blob/master/sig/sig-basicsoftwareservice/sig_basicsoftwareservice.md)|Basic services and utilities for OpenHarmony OS, including startup system, DFX services, notification service, user account service, upgrade service, resource management, barrier-free and misc service.|[@handyohos](https://gitee.com/handyohos)|
English | [简体中文](./sig-basicsoftwareservice_cn.md)
Note: The content of this SIG follows the convention described in OpenHarmony's PMC Management Charter [README](/zh/pmc.md).
## SIG group work objectives and scope
### Work Goals
Provide simple and effective Basic Software Services for Open Harmony Operating System; By modular design, Basic Software Services can support various kinds of devices, scaling from Level 0 to Level 5.
### Work Scope
Basic Software Services includes the following sub-systems:
| Name|Explanation|
| :----- | :----- |
|Startup System|Booting OpenHarmony, and provide init process manager and system parameters for the whole system|
|Upgrade System|Provide Operating System upgrade capability|
|DFX System|Design-for-Test, Design-for-Reliability and Design-for-Manufacturing|
|Event Notification System|Manage system and application notifications|
|Resource Management System|Manage system resources, including CPU, IO and memory|
|Distributed Scheduling System|Scheduing Abilities in Open Harmony distributed network|
|Account Management System|Manage user accounts for Open Harmony|
|Barrier Free System|Provide barrier free common capabilities for Open Harmony|
|Miscellaneous Software System|Provide some miscellaneous services for Open Harmony|
