I have worked with many open and proprietary CI tools, and find GoCD to be the best in this space right now. It supports both Continuous Integration and Continuous Delivery. They also made it open source last year:
Do you guys mind not doing that please?
GoCD was an important step forward conceptually. It's just an actually awful piece of software to try and use.
But I did some digging after your comment and there it is
http://www.indix.com/blog/life-at-indix/employee-spotlight-k...
What did you do before Indix?
I was working at ThoughtWorks as a software engineer.Also, it's now completely open source. I'm not even trying to advocate an enterprise product.
The first one just delivers the packages, but the deployment is triggered by human.