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Time Out reminds you to take regular breaks when using a computer for hours to avoid bad habits and over-straining.

Teaches the concepts of decision trees for regular pattern recognition.

Prepare for the Adobe Certified Expert (ACE) product proficiency exam.

ASL Dictionary allows you to learn American sign language.

GRE Calculator is designed to help you with long calculations.

Trilithon Protractors is a Mac OS X app for web developers and graphic designers...

Windows

Windows Mac

David Stanley

Fast Interaction

Free

It calculates slope lines and display them in the context of the 3-D surface.