Calculators & Converters

MConvert
White-wizard-productions(Trial version)
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Multi-tasking conversion tool
Schoolhouse
Schoolhousetech(Free)
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Schoolhouse: Organize your homework, school projects and more
Gmail to PDF Converter
Macsonik(Free)
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Free Gmail to PDF conversion tool
M3Unify
Doug Adams(Paid)
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Efficient iTunes File Exporting Solution