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Organizes and reminds you about important events in your life.

Create and publish various diagrams to represent your idea.

It is designed for Mac and iPhone users to make lists and stay organized.

Find out how millions of users worldwide have revolutionized the way they think.

Free open source todo manager. It grew out of frustration about other programs not handling composite tasks well.

Momentum is a powerful habit tracker that boosts willpower and helps you reach your goals.

Windows

Windows Mac

Mozilla labs

Prism b4

Free

Prism helps web apps like Gmail, Facebook and Google Docs run better, taking advantage of advances in web technology.