Lightweight HTTP server and a script engine (like PHP or ASP) in one application .It is a very good tool to control a device connected on a remote PC serial portwith a web browser. You can build a complete web interface for your RS232 device,for example for a home automation box, a remote camera, a ham radio, writing htmland script pages. The script code is executed by the internal script engine, so isvery fast. Can be used (running on different ports) together with another web serverand script engine, to have a most wanted feature missing or hard to implementfeature: accessing remote serial ports. A complete web RS232 terminal example isincluded, which is a single file with less than 200 lines ! For other complex tasks PHP script engine can be integrated and used.