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

Organizes and reminds you about important events in your life.

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.

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

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

Windows

Windows Mac

Code Orchestra

COLT

Free

It is a small program to test and build mobile, web, and desktop-based apps.