sequence diagram

http://www.websequencediagrams.com/

StarUML

다운로드: http://sourceforge.net/projects/staruml/files/staruml/5.0/

StarUML 사용자 가이드

http://www.ibm.com/developerworks/kr/library/sep04/bell/index.html

http://staruml.sourceforge.net/docs/user-guide(ko)/toc.html

Violet

http://www.horstmann.com/violet/