Vidalia是T的一个跨平台的GUI控制工具，它是使用Qt框架构建的，可以在任何支持Qt4.1及更高版本的平台上运行，包括Windows，Mac OS X，Linux或者其它使用X11窗口系统的类Unix系统。
Vidalia is a cross-platform graphical controller for the T software, built using the Qt framework. Vidalia runs on most platforms supported by Qt 4.3 or later, including Microsoft Windows, Apple OS X, and Linux or other Unix variants using the X11 window system. It was originally written by Matt Edman, and is currently maintained by Tomás Touceda.
Vidalia lets you start and stop T, see how much bandwidth you are consuming, see how many circuits you currently have active, see where these circuits are connected on a global map, view messages from T about its progress and current state, and let you configure your T client, bridge, or relay with a simple interface. Included in Vidalia is an extensive help system which helps you understand all of the options available to you. All of these features are translated into a large number of languages.