Please contact Gary Egbert, Lana Erofeeva, or Anna Kelbert to obtain ModEM for non-commercial/academic purposes. In your email requesting access pleas provide:
Your Name and Institution
Your intended application/use
ModEM can also be licensed for commercial purposes. Oregon State University holds COPYRIGHT, and ModEM-Geophysics Inc is the exclusive distributer. Please contact ModEM-Geopysics for inquiries about commercial licensing.