WebSim is a program that uses the simplex method to solve small Linear Optimization Problems. It was developed by Glenn Hurlbert and Jake Hawkes at Arizona State University with the support of a grant from the National Science Foundation through their CCLI-EMD program. The latest version (June 2009) was enhanced by Josh Wolfe.

WebSim can also be used to solve systems of linear equalities as well as inequalities, with or without nonnegativity restrictions on its variables. Its main function is more pedagogical and exploratory than practical, illustrating various pivoting options and methods, especially when used in tandem with the inquiry-based textbook,
Linear Optimization: The Simplex Workbook.