JetBrains TeamCity - TeamCity is a continuous integration and build management system.
Vexor.io - Vexor is a fast and cheap cloud continuous integration service with per-minute billing.
Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
Codeship - Codeship is a fast and secure hosted Continuous Delivery platform that scales with your needs.
Agola - A selfhosted open source CI/CD server build around the git workflow.
Octopus Deploy - Octopus is a friendly deployment automation tool for .NET developers.