JetBrains TeamCity - TeamCity is a continuous integration and build management system.
Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
Buildbot - Python-based continuous integration testing framework
CircleCI - CircleCI gives web developers powerful Continuous Integration and Deployment with easy setup and maintenance.
Bitbucket Pipelines - Bitbucket Pipelines brings continuous integration and delivery to Bitbucket cloud, empowering teams to build, test, and deploy their code.
Travis CI - Focus on writing code. Let Travis CI take care of running your tests and deploying your apps.