Implements a Proxy detection (WPAD) interface for Linux, Mac OSX and Windows. Offers a GUI for manual proxy settings and automatic WPAD detection. Makes use of http://code.google.com/p/libproxy/ on Linux and Mac OSX, and uses WinHTTP on Windows. The GUI is based on QT4. For more details, see: https://dev.marc.waeckerlin.org/projects/proxyface