Stumbled across this the other day doing some research: The Directory of Open Access Journals. It lists and links to those journals that offer -- surprise, surprise -- open access to their content.
I'm not convinced this is the best business model for academic journals, but that may be largely beside the point. Of specific interest to this audience, here's the link to Econ journals.
I never understood how ANY publication is supposed to make money giving away their content for free.
It's one of they mysteries of the internet age.