Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
CircleCI - CircleCI gives web developers powerful Continuous Integration and Deployment with easy setup and maintenance.
Travis CI - Focus on writing code. Let Travis CI take care of running your tests and deploying your apps.
Go.CD - Open source continuous delivery tool allows for advanced workflow modeling and dependencies management.
Bamboo - Bamboo is a continuous integration and deployment tool that ties automated builds, tests and releases together in a single workflow.
DeployBot - Push. Build. Deploy! Instantly build and ship code anywhere in one consistent process for your entire team.