SpeedCrunch - SpeedCrunch. SpeedCrunch is a high-precision scientific calculator featuring a fast, keyboard-driven user interface. It is free and open-source software, licensed under the GPL. Download Documentation Donate .
Numi App - Numi is a beautiful text calculator for Mac.
Qalculate! - Qalculate! is a multiplatform multi-purpose desktop calculator.
fxSolver - fxSolver is an free online math solver, equation library, graphing calculator and science/engineering problem helper. To get started, add some formulas, fill in any input variables and press "Solve."
Parsify Desktop - Extendable calculator for the 21st century ⚡
GeoGebra Scientific Calculator - Free online scientific calculator from GeoGebra: perform calculations with fractions, statistics and exponential functions, logarithms, trigonometry and much more!