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

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.

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

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

Create and publish various diagrams to represent your idea.

Windows

Windows Mac

Petri Purho

Maze of Space

Free

Maze of Space is an arcade game about killing space monsters.