Numi App - Numi is a beautiful text calculator for Mac.
Material Unit Converter - Quick, free, online unit converter that converts common units of measurement, along with 77 other converters covering an assortment of units.
ConvertAll - A comprehensive unit conversion program.
Omni Calculator - Helping you make rational decisions, one calculation at a time.
Calculator++ - Calculator++ is an advanced, modern and easy to use scientific calculator.
TDEE Calculator net - Use the TDEE calculator to learn your Total Daily Energy Expenditure, a measure of how many calories you burn per day. This calculator displays MUCH more!