We have developed a web-based, open-source Turing machine simulator that supports both one-tape and three-tape configurations. The simulator features a text editor for programming, a graphical state-based visualization of machine logic, and a dynamic depiction of the bi-directional tape. Several example machines are included to illustrate functionality.

A key component of our tool is a complete implementation of U, the Universal Turing Machine. Users can convert any one-tape machine into the appropriate format for U with a single click, enabling seamless execution and exploration of universal computation.

We believe this simulator will enhance student understanding of Turing machines and the theory of computation by providing a tangible, interactive experience—bridging the gap between abstract mathematical concepts and practical visualization.

This project was supported by a Faculty Research Enhancement Grant from Stephen F. Austin State University. We also acknowledge the foundational work of Andy Li, whose one-tape visualizer served as the starting point for our development.