Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
Bamboo - Bamboo is a continuous integration and deployment tool that ties automated builds, tests and releases together in a single workflow.
CircleCI - CircleCI gives web developers powerful Continuous Integration and Deployment with easy setup and maintenance.
Azure Automation - Learn about Azure Automation, a cloud automation service for process automating those long-running, error-prone, frequently repeated tasks with Windows PowerShell.
Travis CI - Focus on writing code. Let Travis CI take care of running your tests and deploying your apps.
Drone.io - Continuous Integration For GitHub and Bitbucket That Monitors Your code For Bugs