OpenCARP is an open simulation environment for in silico cardiac eletrophysiology experiments. Its source code is public and the sofware is available for free. It offers a great variety of functions and built-in models, from single cell and ionic channels to more complex structures, such as organs; it also presents visualizing tools.
More information, manuals, tutorials and examples can be found on the website: Mais informações, manuais, tutoriais e exemplos podem ser encontrados no site: https://opencarp.org/