NetHack is a popular single player dungeon exploration game that runs on a wide variety of computer systems.
X11::GUITest, is a Perl package, used for controlling applications by means of user emulation. This can be used to interact (SendKeys, ClickMouseButton, FindWindowLike, etc.) with applications running under an X Windows environment. Including applications built (GTK+, Qt, Motif, etc.) upon X11 / Xlib. You may find that this mechanism is easier to use then that provided by xautomation or xdotool.
BLibrestez Robotics Software Library Project
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XUProxy is an extensible multi-protocol proxy based on the Twisted framework. It supports multiple protocol plugins (currently only HTTP), and multiple "filter" plugins for things like logging, caching, and Proxomitron-compatible ad filtering.