MiniTask is a basic cross-platform organization app built on Adobe Air. The learning curve on this app is basically nil, and you'll soon be adding, checking off, and setting alarms for to-do items with ease. There aren't a ton of features, so it's not the greatest for the completely neurotic among us, but if you just need a simple, unfussy to-do list, give it a look.

Let's a take a quick look at what MiniTask can do (fortunately, it's not much!). There's just one window, and you can right-click (CTRL-click on a Mac) to add new tasks and new dividers. You can use the dividers however you like, for different days or different categories of tasks. To-do items have three modes: checked off, not checked off, and alarm. Double-click a task to change the name, and double-click an alarm icon to change the time on an alarm. Seriously, that's all there is to it!