http://www.techadvice.eu/mac/business/calculators-converters/archcalc/2008-05-01weekly1.00http://www.techadvice.eu/mac/business/calculators-converters/icalmaker/2010-11-07weekly1.00http://www.techadvice.eu/mac/business/calculators-converters/macappstuff-percent/2011-08-19weekly1.00