CloudBees vs Empire: What are the differences?
CloudBees: Enterprise Jenkins and DevOps. Enables organizations to build, test and deploy applications to production, utilizing continuous delivery practices. They are focused solely on Jenkins as a tool for continuous delivery both on-premises and in the cloud; Empire: A Self-Hosted PaaS Built on Docker and Amazon ECS. Empire is a control layer on top of Amazon EC2 Container Service (ECS) that provides a Heroku like workflow. It conforms to a subset of the Heroku Platform API, which means you can use the same tools and processes that you use with Heroku, but with all the power of EC2 and Docker.
CloudBees and Empire can be categorized as "Platform as a Service" tools.
Empire is an open source tool with 2.53K GitHub stars and 156 GitHub forks. Here's a link to Empire's open source repository on GitHub.