Continua CI - Continua CI is an affordable, scaleable Continous Integration Server.
Travis CI - Focus on writing code. Let Travis CI take care of running your tests and deploying your apps.
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.
Xcode - Xcode is Apple’s powerful integrated development environment for creating great apps for Mac, iPhone, and iPad. Xcode 4 includes the Xcode IDE, instruments, iOS Simulator, and the latest Mac OS X and iOS SDKs.