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

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

ASL Dictionary allows you to learn American sign language.

Teaches the concepts of decision trees for regular pattern recognition.

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

GRE Calculator is designed to help you with long calculations.

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com.pyehouse

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Spin, pivot, bounce and turn your way through 80 levels of increasingly challenging physics puzzles.