Unikernel – an executable image that can run natively on a hypervisor without the need for a separate operating system – are rapidly gaining momentum. To integrate unikernels into the echo-system, cloud-computing platforms as a service are required to provide unikernels with the same services they provide for constrainers. Here we present Unik, a open source (goo.gl/iEesqK) orchestration system for unikernels. Unik handles the compilation of libraries and applications for running on verity of cloud providers, manages their scheduling, and ensures their health. To provide the user with a seamless PaaS experience, Unik is integrated as a backend to Docker, Kubernetes & Cloud Foundry runtime.