That equivalent in this case is Octave, which is now being developed under the GNU project, and intends to be a free and good alternative to replace MATLAB.
Octave runs as a command interpreter in the terminal of our system. You can access different functions and preset procedures or the modules you can import to amplify the language
The application uses a language which is also called Octave. It principally works with matrices, although it is quite versatile because of its compatibility with C language