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 an open-source cloud platform that offers extensive customization and scalability, making it ideal for large enterprises with specific needs. In contrast, Linode provides a user-friendly, cost-effective cloud solution suitable for small to medium-sized businesses, but lacks the extensive customization and service offerings of OpenStack.