Celtix milestone 4 is now available for download. If you've never heard of Celtix, it's an open source Java ESB, as explained on its home page:
Celtix delivers a Java enterprise service bus (ESB) runtime and set of APIs that make it easy to add transports, message formats, and security features. The goal is to simplify the construction, integration and flexible reuse of technical and business components using a standards-based, service-oriented architecture.
Congratulations on this deliverable to the Celtix team, who have a great record for hitting their project milestones. Simply put, these folks are kicking butt. A few of them sit near me here at IONA, and naturally I talk to them quite a bit. I think they're making all the right decisions in terms of feature set, design and implementation approaches, and flexibility points. Download it and try it for yourself.
Hopefully the next milestone will even contain some contributions from yours truly. I'll talk more about those capabilities here over the next few weeks.