Toro is a kernel that allows the user to dedicate a whole kernel to run a single application. Toro is a set of libraries that compiles together with the user application. This results in a image that can run on top of a hypervisor, e.g., KVM, Xen, VirtualBox, or baremetal. To know more about Toro, visit the blog and the wiki. To try Toro, you can follow a simple tutorial here that aims at running a static web server inside a docker image.