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

Create and publish various diagrams to represent your idea.

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.

Windows

Windows Mac

LilyPond Software Design

LilyPond

Free

open source package to create beautiful music notation