Exa Corporation, previously a publicly traded technology company, specialized in developing software for fluid dynamics simulation, primarily for the automotive, aerospace, and transportation industries. The company was known for its unique offerings in simulation software that enabled engineers to predict and enhance the aerodynamic and thermal performance of designs before physical prototyping. Exa’s flagship product was PowerFLOW, a suite that helped customers simulate airflow and optimize designs for increased efficiency and reduced emissions. In 2017, Exa Corporation was acquired by Dassault Systèmes, a global leader in 3D design software, 3D Digital Mockup, and Product Lifecycle Management (PLM) solutions. The website http://exa.com now redirects to Dassault Systèmes' offerings related to Exa’s technologies and solutions.