From Mineserver Wiki
CursesUI is a GUI for Mineserver. It's included in the default mineserver package. It has got a list of all online players, the console and the chat log. Entered commands will be shown in the commmand history area.
Important: When you use the plugin, make sure you set the system.interface.use_cli config variable to false - otherwise CursesUI dows not function properly!