Open J-Gate is the world's biggest english-language portal to open access journals, featuring article-level searching of over 4,230 OA journals. This is, virtually, an open access library!
Many thanks to the commenter who reminded us at OA Librarian of the need to point to this important OA resource. I would like to post more, but after your comment was approved, I can't find it - it is not easy to search for comments on blogger. Could you get in touch with me by e-mail, heatherm at eln dot bc dot ca?