Chart of "shall issue," "may issue" and "don't issue" states
Here it is.
[UPDATE: a reader notes that it classifies South Carolina as an unrestricted open carry state, which it isn't. S.C. Code Sec. 16-23-20 provides that it is illegal to carry a handgun about the person, and then lists a bunch of exceptions (such as hunters and fishermen while hunting and fishing), but it's apparently not the case that (as in my Arizona) you can just carry anything openly.