Big three:
http://www.ezinearticles.com
http://www.goarticles.com
http://www.articlecity.com
Others:
http://www.article-emporium.com
http://www.workoninternet.com
http://www.ezau.com
http://www.amazines.com
http://www.content-articles.com
http://www.articlesubmissions.com
http://www.articlealley.com
http://www.articlesfactory.com
http://www.newfreearticles.com
http://www.articleshelf.com
http://www.articlecentral.com
Welcome to add more