Here we propose a modified module of gnuplot for simulation based on the global network named webgnuplot, which provides an interface with an independent operating environment, thereby performing gunplot simulation from any connected network computer via a web-based application that can be used remotely throughout the network connection. We describe the module architecture of the web gnuplot and show that this module has been successfully used to perform simulation from any computer with intranet access, without having to install any software or plug-in.