title: Experience with Drools Flow and/or OSWorkflow?
body: <p>I'm looking for a straightforward Java workflow engine that:</p>
  
  <ul>
  <li>can handle both automated and manual (GUI-based) steps within a workflow</li>
  <li>supports long-running, asynchronous tasks</li>
  <li>provides support for restarting workflows in the event of a server crash</li>
  <li>stores a full audit history of previously executed workflows</li>
  <li>provides easy access to this audit history data</li>
  </ul>
  
  <p>Possible candidates include the new Drools Flow process engine in Drools 5, and OSWorkflow from OpenSymphony. From my current understanding, OSWorkflow seems to offer more of what I want (Drools Flow doesn't appear to store much in the way of an audit history); however, the most recent release of OSWorkflow was back in early 2006. Is it a mistake to now use OSWorkflow when it's no longer under active development?</p>
  
  <p>Does anyone have much experience with either/both of these frameworks? Are there any other workflow engines I should be looking at? All recommendations welcome - thanks.</p>