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

Organizes and reminds you about important events in your life.

Create and publish various diagrams to represent your idea.

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

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

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

Windows

Windows Mac

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comet

Free

Comet is an tool for solving complex combinatorial optimization problems.