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The Mars Exploration Rover mission is part of NASA's Mars Exploration Program

Kalkulator is the most complete math calculator for most math/science needs

Makes it easier to discover your family story and family tree

Designs, simulates and tests optical links

Developed by ShurikSoft

Offline Map Maker is a tool that helps you download and view maps offline

Windows

Windows Mac

Wobs of Wee Widgets

Free

Generates crossword puzzles randomly every time you launch the widget.