netsim是网络学习是很需要的辅助工具，十分好用！-Wizard to install virtual drive software needs some auxiliary tools, very handy!

文件系统，十分强大吧！能完成文件增删改查！功能十分好！用php写的。-File system, it is very powerful! Files can be completed CRUD! Function is very good! With php written.