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The Web Application Component Toolkit is a framework for creating web applications. WACT facilitates a modular approach where individual, independent or reusable components may be integrated into a larger web application. WACT assists in implementing the Model View Controller pattern and the related Domain Model, Template View, Front Controller and Application Controller patterns. The WACT framework is developed with the philosophy of continuous refactoring and Unit Testing. WACT encourages these activities in applications based on the framework. WACT uses Simple Test as a unit testing framework. WACT emphasizes writing secure web applications. See Web Application Security for more information.