wercker vs. Buildkite

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.

CI and build automation tool that combines the power of your own build infrastructure with the convenience of a managed, centralized web UI. Used by Shopify, Basecamp, Digital Ocean, Venmo, Cochlear, Bugsnag and more.