Todoist - Todoist is a to-do list that helps you get organized, at work and in life.
Twine - Twine is an open-source tool for telling interactive, nonlinear stories.
TaskPaper - Plain text to-do lists for Mac
RenPy - Ren'Py is a free and cross-platform visual novel engine that helps you use words, pictures, and...
Microsoft To-Do - Task management tool
Quest - Quest lets you create sophisticated text-based games, without having to program.