simBio is a Java package to create biological models for biologist and others. Cardiac cell models are available.
Volume regulation model described in Terashima et al, 2006
E-C-Metabolism coupling model descr. in Matsuoka et al, 2004
Single Na channel model described in Sarai and Noma, 2004
Ventricular cell model described in Matsuoka et al, 2003
Pacemaker cell model described in Sarai et al, 2003
Ca2+-mediated activation model desc. in Kuratomi et al, 2003