Available Backends
* Julia Programming Language: http://julialang.org/
* KAlgebra for Calculation and Plotting: http://edu.kde.org/kalgebra/
* Lua Programming Language: http://lua.org/
* Maxima Computer Algebra System: http://maxima.sourceforge.net/
* Octave for Numerical Computation: https://gnu.org/software/octave/
* Python 2 Programming Language: http://python.org/
* Python 3 Programming Language: http://python.org/
* Qalculate Desktop Calculator: http://qalculate.sourceforge.net/
* R Project for Statistical Computing: http://r-project.org/
* Sage Mathematics Software: http://sagemath.org/
* Scilab for Numerical Computation: http://scilab.org/