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

Create and publish various diagrams to represent your idea.

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.

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

Windows

Windows Mac

Zhongyi Tong

Electronic WeChat

Free

Electronic WeChat is an open source instant messaging tool.