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Create and publish various diagrams to represent your idea.

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

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

Organizes and reminds you about important events in your life.

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.

Windows

Windows Mac

Makoto Tanahashi

MjoGraph

Free

Simple but highly functional 2D plotting program.