I love the abstraction Mesos provides in terms of resource management for cluster. Is seamlessly integrated with Apache Spark. That allow launching Spark tasks in a Mesos cluster by just specifying the Mesos cluster URL. From local to clustered computation in just one parameter.

Its C++ code base is quite neat, often using functional programming patterns. Review collected by and hosted on G2.com.

If you have a distributed application you want to deploy on Mesos, you need to use a framework to handle resource offers for it. That framework is ad-hoc for that application and either someone else wrote it or you need to write it by yourself. However, thanks to Marathon, which acts as a generic framework for containerized applications, you can deploy whichever application you might wrap in a container such as Docker. Review collected by and hosted on G2.com.