title: are there any alternatives to yUML
body: <p>I'm looking for an alternatives to <a href="http://yuml.me/" rel="noreferrer">yUML</a>, preferably open source.
  Sure yUML is great and I really like it, but I would like to be able to extend it. </p>
  
  <p>I'm also interested in other services in the same direction (diagram generation), but I'm not looking for any (UML)desktop tools.   </p>