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.
Buildbot - Python-based continuous integration testing framework
Codeship - Codeship is a fast and secure hosted Continuous Delivery platform that scales with your needs.
Bitrise - Tens of thousands of agencies, startups and enterprise companies with mobile apps - including Runkeeper, Grindr, Duolingo and more - use Bitrise to automate their way to increased productivity & speed