A start-up is developing the first operating system designed specifically for computing in the cloud. Cloudius Systems’ (www.cloudius-systems.com/) open source OSv (operating system virtualized) kernel will run on virtual machines. In existing cloud-based operating systems, the hypervisor and the runtime environment – typically the Java Virtual Machine – as well as the operating system, perform several of the same tasks. This duplication of the work generates operational overhead. Conventional operating systems, such as Linux and Windows, will, for example, block a virtual machine from handling some tasks although the virtual machine is able to execute them more efficiently for a single application. OSv, by contrast, will readily pass some of these functions to the Java Virtual Machines. Cloudius plans to provide technical support for OSv in the first quarter of 2014.