SOFA is an open-source framework primarily used for interactive physics simulations, particularly in the fields of computer graphics, robotics, and medical simulations. It is designed to facilitate the modeling of complex physical systems and supports real-time interaction. The framework is highly modular, allowing users to customize simulations by assembling and modifying existing components or developing new ones. This flexibility makes it a popular choice among researchers and developers working on simulation projects that require accurate and efficient solutions.