It appears to be a Java Tomcat package with components of Oracle’s BPel, MySql, JBoss plus email functionality. I couldn’t see a demo of the functionality anyway and don’t have the time or inclination to check it out further right now.
eMayor is registered on Berlios – registration date 6 April 2006. Last update 6 April 2006. One help message from an Argentinian, posted in July, one response. No emails on the archive, and no CVS activity that I could see.
On the face of it, this is how OSS packages can build a competitive advantage over closed-source development. It will be interesting to investigate what if any activity is taking place now that the EC funding has run out; a useful case study to follow up I think.