Goals of the open access movement include a streamlined publishing process (pier review and non pier review) and open distribution.
Read more about it at SPARC & ePrints.org

Directory of Open Access Journals MagPortal.com Public Library of Science (PLoS) - PLoSbiology PLoSmedicine Below are several sites which include extensive lists of free journals. The below search boxes will allow you to find free fulltext articles. PubMedCentral (Journal List) (AND, OR, "Quotes" to narrow search) Directory of Open Access Journals (DOAJ) - more than one word in a field will be treated as phrase In: All Fields Title Journal title ISSN Author Key words Abstract AND OR NOT  In: All Fields Title Journal title ISSN Author Key words Abstract HighWire Keyword(s):Author:Year:Vol:Page: HW-hostedHW-hosted + Medline - List FindArticles (Journal List)Fulltext all magazines Arts/Entertain. Automotive Business/Fin. Comp./Tech. Health/Fitness Home/Family News/Society Reference/Ed. Sports (+, -, "Quotes" to narrow search) PubMed

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BiomedCentral - FindArticles - FreeFulltext - FreeMedicalJournals - HardingMD - Highwire Press - LCLS - Medscape - PubMedCentral - TAMU - SciELO - MedInd - Eric - UMMS

General Search Engines to find your journal of interest - Some journals offer selective free articles.