The diffsims library is an open-source Python tool for simulating diffraction patterns. It provides a comprehensive framework for researchers to model and analyze various diffraction phenomena. This library is designed to be user-friendly and flexible, allowing users to customize simulations to suit their specific needs. With its robust features and continuous updates, diffsims has become a valuable resource for the scientific community. By leveraging diffsims, researchers can gain deeper insights into the underlying physics of diffraction and make more accurate predictions. The library's capabilities extend beyond simulations, enabling users to visualize and analyze results, making it an indispensable tool for diffraction-related research.