Simulations Plus, Inc. is a global software development company that specializes in creating drug discovery and development software using artificial intelligence and machine learning technologies. They operate through four different segments, including Simulations Plus, Cognigen, DILIsym, and Lixoft. They offer a variety of products based on mathematical models, such as DILIsym and IPFsym, and provide contract research services that cater to pharmaceutical, biotechnology, agrochemical, cosmetics, food companies, as well as academic and regulatory agencies.