Graduate student from the University of Utah. I've tried several open source ARM simulators, and Skyeye is the best for my needs. I want to run some barebone arm7tdmi program, and Skyeye's lpc2210 support is the best available platform.
Another simulator might be able to compete with Skyeye in the future is M5,
http://www.m5sim.org/wiki/index.php/Main_Page, but no way at present time.