Continuous integration server.

OpenMake Meister provides an enterprise level continuous integration build server allowing for build loops to be triggered by an SCM Check-in Process with full workflow and build management processing.

An integration server written in Rails and integrated with metric_fu, rspec, cucumber and maven.

Concrete is a simple open source continuous integration server written with NodeJS and CoffeeScript

AnthillPro brings together the responsiveness and agility of automation with role-based security, strict auditability, and traceability.

TeamCity is a continuous integration and build management system.

CCMenu displays the project status of CruiseControl continuous integration servers as an item in the Mac OS X menu bar.

Semaphore is a hosted continuous integration and deployment service for open source and private projects. By automating the process of software testing and delivery in the cloud, it helps teams ship more stable applications, faster.

Jenkins monitors executions of repeated jobs, such as building a software project or jobs run by cron.

Xinc is a continuous integration server written in PHP 5. It has built-in support for Subversion and Phing (and therefore PHPUnit), and can be easily extended to work with alternative version control or build tools.