ExtendSim is a powerful, advanced simulation software tool designed for modeling complex systems in diverse fields such as manufacturing, healthcare, logistics, and the environment among others. It provides users with the tools to simulate scenarios, predict outcomes, and optimize processes using discrete event, continuous, discrete rate, and agent-based simulation methodologies. With its user-friendly interface, robust analytical tools, and flexible modeling environment, ExtendSim helps professionals not only understand but also improve their operations. The software's capabilities are complemented by an array of support and training resources available through its website, http://www.extendsim.com, ensuring users can maximize the software’s potential for their specific needs.