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View, sign, annotate, and print PDF files on your Mac.

Organizes and reminds you about important events in your life.

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

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

Organize your life and keep track of what you've done and what you have to do.

Create and publish various diagrams to represent your idea.

Windows

Windows Mac

Neil Brown, Michael Kolling, Davin McCall, Philip Stevens, John Rosenberg, Ian Utting, Marion Zalk

BlueJ

Free

Java application for teaching object-oriented programming to students.