title: Online Flowchart Diagram Tool (run from private wiki)
body: <p>Is there some flowchart diagram tool that would (or could be made to) integrate with a self-hosted wiki?  </p>
  
  <p>Requirements:</p>
  
  <ul>
  <li>basic functionality (e.g., drawing some boxes and some arrows)</li>
  <li>would strongly prefer it to be visual (i.e., not written out in text that then gets converted)</li>
  <li>allows for dynamic editing</li>
  <li>it is important that the tool can be integrated into the wiki (e.g., as an extra panel somewhere)</li>
  <li>can be run from a personal server</li>
  <li>free</li>
  </ul>
  
  <p>I've looked around at other threads here concerning a diagram tool, but they are either desktop applications, online ones which reside on third-party servers, or cost money. </p>
  
  <p>[Edit] Thanks for the responses, but I would like them to be dynamically editable (I've added this to the requirements).  What I mean is that I would like to integrate (or run it from a private server) some online collaborative diagramming tool.  While I could create a JPG of something made in Graphviz and upload it, this is not easily editable.  I would have to upload the source file somewhere, which someone would have to download and edit, then upload the new JPG.</p>