SpeedCrunch
Open Source
SpeedCrunch is a high-precision scientific calculator featuring a fast, keyboard-driven user interface.
Calcbot
Freemium
Calcbot is a intelligent calculator and unit converter.
Soulver
Commercial
Soulver is quicker to use than a spreadsheet and smarter and clearer than a traditional calculator.
Compare Windows Calculator with alternatives
Compare SpeedCrunch and Windows Calculator and decide which is most suitable for you.
Compare Soulver and Windows Calculator and decide which is most suitable for you.
Compare Calcbot and Windows Calculator and decide which is most suitable for you.