FEATool Multiphysics is a simulation platform designed for modeling and solving a wide range of engineering and scientific problems involving multiple physical processes. This software offers a fully integrated environment for constructing, customizing, and solving physics-based problems in areas such as fluid dynamics, structural mechanics, heat transfer, and electromagnetics. With its user-friendly interface, FEATool Multiphysics enables both novice and experienced users to set up and analyze complex multiphysics scenarios efficiently. The platform supports grid generation, preprocessing, solution computation, and post-processing, allowing for comprehensive end-to-end modeling capabilities. Users can further extend the functionality through scripting and custom integrations.