Codeship is a free hosted Continuous Delivery Service. It focuses on simplicity and usability. Set up Continuous Integration in a few steps and automatically deploy when all your tests have passed.
Codeship has great support for lots of languages and test frameworks. It integrates with GitHub and BitBucket and lets you deploy to cloud services like Heroku and AWS.
Codeship makes Continuous Delivery so simple, setup only takes 1 minute.