CircleCI vs. Test Kitchen vs. wercker

CircleCI’s continuous integration and delivery platform helps software teams rapidly release code with confidence by automating the build, test, and deploy process. CircleCI offers a modern software development platform that lets teams ramp

Test Kitchen has a static, declarative configuration in a .kitchen.yml file at the root of your project. It is designed to execute isolated code run in pristine environments ensuring that no prior state exists. A plugin architecture gives you the freedom to run your code on any cloud, virtualization, or bare metal resources and allows you to write acceptance criteria in whatever framework you desire.

Wercker integrates with your favorite developer platforms out there, such as GitHub and Bitbucket. When you are ready to deploy your application, wercker enables you to deliver your application to cloud platforms like Heroku, OpenShift and Amazon Web Services.