Store all of your worries in one place with Anxiety. Well, hopefully this little application will help you cure some of your anxiety by simplifying how you record your daily worries. Anxiety is a free Mac application (for Leopard only) that allows you to have instant access to your to do list. Check off a task, and it synchronizes it with your lists in Mail and iCal. And its always there hanging around, when you need to double check it, or when you need your worries to just disappear. Via: Lifehacker.