Gnome calculator
SpeedCrunch
Qalculate!
Soulver
Numi App
Event Viewer
OpalCalc
WolframAlpha
SMath Studio
MATLAB
Wolfram Mathematica
Maxima
PTC Mathcad
GNU Octave
Mathcad
Scilab
Gnome calculatorSpeedCrunch - 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 .
MATLAB - A high-level language and interactive environment for numerical computation, visualization, and programming
Qalculate! - Qalculate! is a multiplatform multi-purpose desktop calculator.
Wolfram Mathematica - Mathematica has characterized the cutting edge in specialized processing—and gave the chief calculation environment to a large number of pioneers, instructors, understudies, and others around the globe.
Soulver - Soulver is a software application that functions as a calculator that allows you type a continuous stream of information rather than having to input data into multiple cells.
Maxima - Maxima is a fairly complete computer algebra system written in Lisp with an emphasis on symbolic computation.