BioMed Central - All the original research articles in journals published by BioMed Central are immediately and permanently available online without charge. McGill University is a supporting member of BMC, entitling authors to a 15% reduction of the article publication fee.
Directory of Open Access Journals (DOAJ) - A comprehensive directory listing free, full-text, quality-controlled scientific and scholarly journals, covering all subjects and languages. If choosing an open access journal, journal listing in DOAJ can be used as a positive indicator
Public Library of Science - A non-profit organization of scientists and physicians committed to making the world's scientific and medical literature a freely available public resource. PLoS Publishes its own journals.