Phog is a graphical greeter speaking the `greetd` protocol and aimed at mobile devices like smart phones and tablets using touch based inputs and small screens.

Qt is a cross-platform C++ application framework. Qt's primary feature is its rich set of widgets that provide standard GUI functionality.

Qt is a cross-platform C++ application framework. Qt's primary feature is its rich set of widgets that provide standard GUI functionality.

Spies intercept and record calls to functions. They can report on how many times a function was called and with what arguments. They can allow the function call to go through as normal, to block it, or to reroute it to another function.

The Visualization Toolkit (VTK) is an open-source software system for 3D computer graphics, image processing, and visualization.

Arabic characters in the isolated form, i.e. every character rendered regardless of its surroundings, need to be reshaped and replaced with their correct shapes according to their surroundings. Using this library helps with the reshaping.