You will need a Mac OS X or Windows computer that supports an appropriate Integrated Development Environment (IDE). Any relatively recent computer should be sufficient. On Mac OS X, you should be running the Mac OS X 10.7 "Lion" operating system (or later). Most relatively recent Windows computers will support an appropriate version of the Microsoft Visual Studio IDE. Setting up the IDE for JUCE development is covered in Chapter 1, Installing JUCE and the Introjucer Application.