R (programming language) is described as 'R is a free software environment for statistical computing and graphics' and is a well-known app in the Development category. There are more than 50 alternatives to R (programming language) for a variety of platforms, including Windows, Linux, Mac, Online / Web-based and Android. The best alternative is Python, which is both free and Open Source. Other great apps like R (programming language) are GNU Octave (Free, Open Source), MATLAB (Paid), Julia (Free, Open Source) and Mathematica (Paid).
Octave is a computer program for performing numerical computations which is mostly compatible with MATLAB. It is part of the GNU Project. It is free software under the terms of the GNU General Public License.
MATLAB is a numerical computing environment and programming language. Maintained by The MathWorks, MATLAB allows easy matrix manipulation, plotting of functions and data, implementation of algorithms, creation of user interfaces, and interfacing with programs in other languages.
SageMath is a free open-source mathematics software system licensed under the GPL. It builds on top of many existing open-source packages: NumPy, SciPy, matplotlib, Sympy, Maxima, GAP, FLINT, R and many more.
PSPP is a free software application for analysis of sampled data. It has a graphical user interface and conventional command line interface. It is written in C, uses GNU Scientific Library for its mathematical routines, and plotutils for generating graphs.