一个很好的开源项目管理系统源代码，大家可以部署测试，看看效果如何。,A very good open-source project management system source code, we can deploy the test to see how.

用类创建一个公司体系，且此公司下有两个子公司，子公司共同完成一个项目，可以相互调派员工。-Create a company with a class system, and this company has two subsidiaries, together to complete a project, you can deploy employees each other.