 [Copernicus](http://publications.copernicus.org/open_access_journals/open_access_journals_a_z.html) 

 [DOAJ](http://www.doaj.org/) 

 [Elsevier Open Access Journals](http://www.elsevier.com/about/open-access/open-access-journals) 

 [Hindawi](http://www.hindawi.com/) 

 [Oxford Journals](http://www.oxfordjournals.org/en/oxford-open/index.html) 

 [Redalyc](http://www.redalyc.org/home.oa) 

 [Revistas de la UNAM](http://www.revistas.unam.mx/#) 

 [Royal Society Open Science](http://rsos.royalsocietypublishing.org/) 

 [SciELO](http://www.scielo.org/php/index.php?lang=es) 

 [Springer Open](http://www.springeropen.com/) 

 [Taylor &amp; Francis Open Access](http://www.tandfonline.com/page/openaccess) 

 [Universidad de Chile](http://www.revistas.uchile.cl/) 

 [Universidad de San Pablo](http://www.revistas.usp.br/wp/) 

 [Wiley Open Access](http://www.wileyopenaccess.com/view/index.html) 

E-journals