cloudbees is the leader in CI CD development and innovation. their products are award winning and open source with more than 6000 stars on github like very famous jenkins.
what i like most about cloudbees how much they care about open source, and technologies to be working platform independent and have up to date support for technologies like docker.
based on java, they have some of best industry veteran java programmers, ex-core contributors of hudson and have now taken it afar to become extremely versatile product jenkins.
lets face it, everyone loves jenkins, but to scale and manager volumes of builds, is what cloudbees has support for technologies like mesos .
there isnt much to dislike even if you try, but the support for jenkins as compared cloudbees plugins is quite divergent. that all makes sense since cloudbees isnt inherently an open source company, they do strive and thrive to make money but they do it best way that helps communities also.
cloudbees has variety of products, to see which one floats your boat, its always a good idea to start with their open source projects like jenkins and cloudbees docker plugin support.
large scale application deployments, gated testing and integration test, multiple builds per day and secure single sign-on based platform for users to manage their development environments.