ComfortAir HVAC software is designed to be used by engineers, architects, contractors and energy auditors to calculate and analyse heating and air conditioning hourly loads in commercial buildings. Input and output units can be set independently to..

AbleCalc is a wonderful simple calculator with great usability. The program shows big numbers in natural style, not as "12345E+1234" and also displays a symbol representing your current operation at the left of the entry field.

PPCalc allows you to quickly and easily calculate your PayPal fees before you accept money online. It also allows you to "reverse" calculate your PayPal fees to determine the exact amount a person must send you for you to get the amount you want.