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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.

Organizes and reminds you about important events in your life.

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.

Create and publish various diagrams to represent your idea.

Windows

Windows Mac

Arnaud Roques

PlantUML

Free

Create some UML diagram using a simple textual description language.