OpenJ-Gate, which bills itself as “the world’s biggest open access English language journals portal” , provides access to 4649 “academic, research and industry journals”, 2,528 of which are peer-reviewed. The site is run by Informatics India in support of the Open Access Initiative.
If you’re looking for open-access journals, it’s probably the place to start. You can browse journals by name and by subject, and you have access to each journal’s Table of Content. There are a couple negatives – while you can access the articles, they isn’t an obvious link to the journal itself. Sure, you can open an article and then work backward to the site’s URL, but the lack of easy links to the journal seems a tad unfriendly. In addition, the link to the journal’s archives is incomplete, at least in the case of the Journal of Tropical Forest Science. Overall though, it looks like a very valuable resource, especially for accessing less well-known journals.