MirageOS is a library operating system that constructs unikernels for secure, high-performance network applications across a variety of cloud computing and mobile platforms. Code can be developed on a normal OS such as Linux or MacOS X, and then compiled into a fully-standalone, specialised unikernel that runs under the Xen hypervisor.
MirageOS uses the OCaml language, with libraries that provide networking, storage and concurrency support that work under Unix during development, but become operating system drivers when being compiled for production deployment. The framework is fully event-driven, with no support for preemptive threading.
MirageOS 1.0 was released in December 2013, followed by MirageOS 2.0 in July 2014. All the infrastructure you see here is self-hosted. Check out the documentation, compile your hello world unikernel, get started with the public cloud, watch the talks, or see the slides.