Can't say I'm a fan of any link that primarily lists for-profit and online-only schools. Many great schools out there are offering advanced degrees online, but they aren't paying for placement on all these dot.coms like the Phoenixes are.
Try this link to get you started: www.electroniccampus.org/e-learning/
It doesn't cover the entire US, but it will get you started!
Additionally, I should mention that most of the public/traditional universities that are now offering classes online cost less per credit than the for-profit folks. And you don't have to worry about accreditation issued (the word accredited doesn't guarantee anything, you need to know if they are accredited by the same boards that the research universities use, else credit transfer and reputation way not be what you think).
Last edited by Live2Learn; 04/01/10 02:16 PM.