"For the most part, the applications that are specifically designed for project organizing are way too complex, with too much horsepower to really be functional for 98 percent of what most people need to manage." — David Allen, Getting Things Done

TaskPaper — Simple to-do lists

For Mac users to make lists and stay organized. TaskPaper is a simple to-do list that’s surprisingly adept. Unlike standard organizers, TaskPaper gets out of your way so that you can get things done. Requires Mac OS X 10.6+

Purchase TaskPaper