CoreOS is an open-source lightweight operating system based on the Linux kernel and designed for providing infrastructure to clustered deployments, while focusing on automation, ease. Developed by CoreOS, Inc
License: Free
OpenStack is a versatile cloud computing platform that offers extensive support for both virtual machines and containers, making it highly customizable but complex to manage. In contrast, CoreOS is designed specifically for containerized applications, providing a lightweight and efficient environment with fast deployment capabilities but limited support for virtual machines.