Cloud Foundry is an open source, multi-cloud application platform as a service.
License: Open Source
CloudFoundry is a highly customizable, open-source PaaS that supports a variety of languages and is suitable for enterprise applications, while Heroku focuses on ease of use and quick deployment, making it ideal for startups and small to medium-sized applications. CloudFoundry offers more flexibility and control, whereas Heroku provides a more streamlined experience with a rich ecosystem of add-ons.