Hi Everyone, After something like two years of development at <company> I have been able to open source an application which has Jackrabbit at its core. It is a Workflow Automation system called Gravity.
http://gravity.devcentre.org I must admit a little apprehension about telling all you clever people because I suspect that I could have done things better, used different tools, libraries or frameworks. I have already got a few "why didn't you use technology X" emails. It certainly needs some love and attention before it would be what I call 'market ready', that is fully feature complete, but potentially is useful now. There is a demonstration system on the site, but I have yet to really describe in detail the build and deployment. I will be working on this full time in the near future. It has been released under a GPL3 license.