Travis CI - Focus on writing code. Let Travis CI take care of running your tests and deploying your apps.
Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
JetBrains TeamCity - TeamCity is a continuous integration and build management system.
CircleCI - CircleCI gives web developers powerful Continuous Integration and Deployment with easy setup and maintenance.
Bamboo - Bamboo is a continuous integration and deployment tool that ties automated builds, tests and releases together in a single workflow.
GoCD - With its parallel and sequential execution, GoCD can easily configure dependencies for fast feedback and on-demand deployment. GoCD's Value Stream Map lets you track a change from commit to deploy at a glance.