XL Deploy - Enterprise-scale Application Release Automation for any environment
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.
BuildMaster - BuildMaster Software is an application release automation software that also specializes in release management. It was designed by Inedo, a software development company. Read more about BuildMaster.
Codeship - Codeship is a fast and secure hosted Continuous Delivery platform that scales with your needs.
Octopus Deploy - Octopus is a friendly deployment automation tool for .NET developers.