What other office systems are free to use?

Development language: However, open source distribution uses ZPL protocol, and development uses PHP+MYSQL language.

Function module: However, collaboration consists of customer management (CRM), daily office, financial accounting, document management, project management, team sharing, application management and other modules, and each module is divided into multiple function points, which basically covers various scenarios. However, the system also integrates self-developed chat tools and a variety of third-party WEB applications, which is unified in management and easy to operate.

Highlight: powerful function and clear logic. However, compared with other collaborative products on the market, collaboration is more focused on providing integrated and simplified solutions.

Second place: PHPOA

Development language: PHPOA is developed in PHP+MYSQL language and uses agile MVC development framework.

Function module: The functions of PHPOA include personal office, workflow, official documents, human resources, administrative office, archives, project management, knowledge base, online communication, CRM system and many other function points. It is suitable for all kinds of specifications and requirements in the enterprise field, and constitutes a high-performance and high-availability information management platform.

Recommended reason: PHPOA is committed to the comprehensive dataization of daily management, approval and business management of enterprises and institutions, and has launched application platforms such as enterprises, governments, groups and SAAS for different needs of various enterprise types.

Third: micro-OA system

Development language: Micro-OA system follows Apache2 open source protocol and is developed based on Bootstrap framework.

Function module: Micro-OA includes mail management, approval process, information release, document management, task coordination, daily work, customer management and many other functions.

Recommended reason: Micro-OA system is designed and developed for the process management of small and micro enterprises, which can easily cope with the ever-changing audit process. Efforts will be made to build a micro-OA management system with efficient collaboration and mobile office.

Fourth place: Magic Cube OA

Development Language: Rubik's Cube OA is an advanced open source office system based on Microsoft Asp.net 4.0 and SQL Server 2008.

Function module: Rubik's Cube OA includes authority management, user management, department management, attendance management, process management, task management, e-mail, calendar, discussion area, communication theory and other function points, with multiple skin colors to switch.

Highlight: Rubik's Cube OA is positioned as an office management system, aiming at the daily office management of enterprises. Its responsive UI design can adapt to PC, notebook computer, iPad/ Android tablet /Windows tablet, and various mobile phones.

The above models are all general OA management systems suitable for small and medium-sized enterprises, which are streamlined and free (each model has a free version, of course, if the free version can't meet your needs, you can consider charging version or secondary development), open source and support secondary development. If your enterprise has the need for collaborative work, you can try to choose.