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Organizes and reminds you about important events in your life.

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

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

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

Create and publish various diagrams to represent your idea.

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

Windows

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G*Power

Free

Creates statistical power analyses for various tests.