OSv is a cloud-based operating system with build images for Xen, KVM, Amazon web services and VMware coming up. It is written from scratch, “designed from the ground up to execute a single application on top of a hypervisor, resulting in superior performance and effortless management”. Linux.com ran an interview with some of the developers behind OSv.
OSv promises “Zero OS management” with “no need for administration, template management, configuration and tuning”. Common Java framework integration consists of “frameworks such as Tomcat, JBoss, SpringSource […]. Common open source technologies such as Hadoop and NoSQL are being optimized and integrated to run on top of OSv.”