OpenStack is a free and open-source software platform for cloud computing, mostly deployed as infrastructure-as-a-service (IaaS), whereby virtual servers and other resources are made available to customers.
License: Open Source
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.