Preme for Windows - Speeds up your window switching.
Twine - Twine is an open-source tool for telling interactive, nonlinear stories.
GridMove - GridMove - A window management tool that can quickly arrange your windows into desktop grids.
RenPy - Ren'Py is a free and cross-platform visual novel engine that helps you use words, pictures, and...
WinDock - WinDock is a window manager ideal for large, or multi-monitor setups. Features:
Quest - Quest lets you create sophisticated text-based games, without having to program.