> For the complete documentation index, see [llms.txt](https://changs-organization-1.gitbook.io/userguide-for-member/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://changs-organization-1.gitbook.io/userguide-for-member/what-is-member.md). # What is Member? **Member** is a membership management system for physical cooperation groups such as BESIII, LHAASO. The system uses a modern web architecture with SpringBoot for the back-end, NextJS for the front-end, Apache Shiro as the security framework and Material UI as the front-end UI library. The system is based on personal information management, where changes to personal information need to be submitted to the administrator for review in the form of a form, and records of changes are saved to the database. The system contains functions such as user management, fund management, institution management, paper management. The system is developed and maintained by the DAQ group at the Institute of High Energy Physics, Chinese Academy of Sciences. The sytem is open source and is licensed under the BSD3 license. You are free to use, copy, modify and distribute this software under the terms of the license.