http://jakarta.apache.org/struts/index.html
http://www.ingrid.org/jajakarta/struts/
http://www-6.ibm.com/jp/developerworks/java/010824/j_j-struts.html
http://www.infoscience.co.jp/technical/struts/index.html
http://www.freeml.com/ctrl/html/MessageListForm/struts-user
http://homepage2.nifty.com/ymagic/struts/realindex.html